Azure Pipelines configuration

[iceiix]

Setup https://github.com/marketplace/azure-pipelines. The main advantage over our current AppVeyor (Windows) and SourceHut (Linux) CI systems is Azure also supports macOS:

Continuously build, test, and deploy to any platform and cloud

Azure Pipelines offers cloud-hosted pipelines for Linux, macOS, and Windows with 10 free parallel jobs and unlimited minutes for open source projects.

[iceiix]

https://github.com/crate-ci/azure-pipelines looks to be the easiest way to setup a Rust project with Azure Pipelines.

But it enables Clippy by default, with seemingly no option to turn it off. Forked to https://github.com/iceiix/azure-pipelines/tree/clippy to allow configuring clippy, but still haven't got it passing yet.

It would be a good idea to fix all the clippy warnings, nonetheless. Many are legitimate errors. But the majority are in steven_gl, gl-generator-generated code. I want to remove this dependency with #262 glow, but that migration is not complete enough to merge. Fixing the warnings shouldn't be a blocker for configuring CI.

[iceiix]

cargo clippy -- -A clippy::all allows all, but there are still several errors on https://dev.azure.com/iceix/8fea6bb4-3420-4552-8659-3b351dfba44b/_apis/build/builds/10/logs/70 I am not seeing locally:

error: you are getting the inner pointer of a temporary `CString`
   --> src/gl/mod.rs:540:53
    |
540 |             unsafe { gl::GetUniformLocation(self.0, ffi::CString::new(name).unwrap().as_ptr()) };
    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `#[deny(clippy::temporary_cstring_as_ptr)]` on by default
    = note: that pointer will be invalid outside this expression
help: assign the `CString` to a variable to extend its lifetime
   --> src/gl/mod.rs:540:53
    |
540 |             unsafe { gl::GetUniformLocation(self.0, ffi::CString::new(name).unwrap().as_ptr()) };
    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr

error: this public function dereferences a raw pointer but is not marked `unsafe`
   --> src/gl/mod.rs:651:48
    |
651 |             gl::Uniform4fv(self.0, len as i32, data);
    |                                                ^^^^
    |
    = note: `#[deny(clippy::not_unsafe_ptr_arg_deref)]` on by default
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref

and many of the form:

error: strict comparison of `f32` or `f64`
   --> src/ui/mod.rs:308:12
    |
308 |         if self.last_sw != sw
    |            ^^^^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(self.last_sw - sw).abs() > error`
    |
    = note: `#[deny(clippy::float_cmp)]` on by default
    = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error`
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp

[iceiix]

Now gets past clippy, but cargo test fails:

   Compiling stevenarella v0.0.1 (/home/vsts/work/1/s)
error: linking with `cc` failed: exit code: 1
  |
  = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.18dffh3dd4cex5ff.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.1da26x5e4au26y3b.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.1m5owwnqtdweceoe.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.1rcgptnnh9c3me8w.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.1sxa0iejopo4x5ey.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.1tb9izpog1suq8f7.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.22bom7hyeeervvo0.rcgu.o" "/home/vsts/work/1/s/target/debug/deps/stevenarella-7a892c937fc80915.23ovhzeksxpuqzi.rcgu.o" 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"/home/vsts/work/1/s/target/debug/deps" "-L" "/home/vsts/work/1/s/target/debug/build/libloading-6a7d5c0903b78fe2/out" "-L" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-70d03ac6bbb1c69e.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-72a5022f7bb4bd76.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-1d3a4b88a8b90511.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-f2e3acf79ce4bd51.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-219c2b67d6572a88.rlib" "/home/vsts/work/1/s/target/debug/deps/libsteven_blocks-cd2bdbcafcc9e78c.rlib" "/home/vsts/work/1/s/target/debug/deps/libclipboard-d252766afb93cc14.rlib" "/home/vsts/work/1/s/target/debug/deps/libx11_clipboard-b9038cfe292c4710.rlib" "/home/vsts/work/1/s/target/debug/deps/libxcb-f27b7595bdd6c18f.rlib" "/home/vsts/work/1/s/target/debug/deps/libglutin-3c6c5af1d009a303.rlib" "/home/vsts/work/1/s/target/debug/deps/libosmesa_sys-aa231b28af161ad3.rlib" "/home/vsts/work/1/s/target/debug/deps/libshared_library-bad275e1e5c4c4ea.rlib" "/home/vsts/work/1/s/target/debug/deps/libparking_lot-3b5dc92f20cd7212.rlib" "/home/vsts/work/1/s/target/debug/deps/libparking_lot_core-1875008e45d7ccf9.rlib" "/home/vsts/work/1/s/target/debug/deps/liblibloading-8a0d76335728a879.rlib" "/home/vsts/work/1/s/target/debug/deps/libwinit-c953ec6dfa362428.rlib" "/home/vsts/work/1/s/target/debug/deps/libsmithay_client_toolkit-bf7adc95575bc6ca.rlib" "/home/vsts/work/1/s/target/debug/deps/libwayland_protocols-05820a1285c312a4.rlib" "/home/vsts/work/1/s/target/debug/deps/libwayland_client-9c16d02cf4c65ab5.rlib" "/home/vsts/work/1/s/target/debug/deps/libwayland_commons-86c64e692ec48def.rlib" "/home/vsts/work/1/s/target/debug/deps/libwayland_sys-19768c74f0ae33eb.rlib" "/home/vsts/work/1/s/target/debug/deps/libcalloop-4419da3b649d6549.rlib" "/home/vsts/work/1/s/target/debug/deps/libmio_extras-285ae3a1d3f961bb.rlib" "/home/vsts/work/1/s/target/debug/deps/liblazycell-ad4a3448c91e2813.rlib" "/home/vsts/work/1/s/target/debug/deps/libnix-aa9d5e1a5d266222.rlib" "/home/vsts/work/1/s/target/debug/deps/libvoid-4eb9117eb6753ca2.rlib" "/home/vsts/work/1/s/target/debug/deps/libmemmap-d2773caebbe2b96c.rlib" "/home/vsts/work/1/s/target/debug/deps/libandrew-74074b8e248826f2.rlib" "/home/vsts/work/1/s/target/debug/deps/libxml-684b793326b900a8.rlib" "/home/vsts/work/1/s/target/debug/deps/libxdg-180e92ddfc546705.rlib" "/home/vsts/work/1/s/target/debug/deps/libwalkdir-1eac2629665a970a.rlib" "/home/vsts/work/1/s/target/debug/deps/libsame_file-59382380447d867d.rlib" "/home/vsts/work/1/s/target/debug/deps/librusttype-c831d8411fdb6051.rlib" "/home/vsts/work/1/s/target/debug/deps/librusttype-af52874b095ee418.rlib" "/home/vsts/work/1/s/target/debug/deps/libstb_truetype-31223bf8c7038fc0.rlib" "/home/vsts/work/1/s/target/debug/deps/libordered_float-f48eea1f7d7f6756.rlib" "/home/vsts/work/1/s/target/debug/deps/libline_drawing-8577949ebdbb2f5e.rlib" "/home/vsts/work/1/s/target/debug/deps/libdlib-f169cd025f96e610.rlib" "/home/vsts/work/1/s/target/debug/deps/liblibloading-44357d200bc2f8a7.rlib" "/home/vsts/work/1/s/target/debug/deps/libraw_window_handle-e3e6f988f8e33de9.rlib" "/home/vsts/work/1/s/target/debug/deps/libparking_lot-67e80218bb3304cf.rlib" "/home/vsts/work/1/s/target/debug/deps/libparking_lot_core-a7223bb27ddb9440.rlib" "/home/vsts/work/1/s/target/debug/deps/libsmallvec-61ae266fc460a4a0.rlib" "/home/vsts/work/1/s/target/debug/deps/liblock_api-37da1881a40b7f7e.rlib" "/home/vsts/work/1/s/target/debug/deps/libinstant-9c13ef174f51fd54.rlib" "/home/vsts/work/1/s/target/debug/deps/libglutin_glx_sys-9a65ee9557d321f7.rlib" "/home/vsts/work/1/s/target/debug/deps/libx11_dl-b5823b3ac965b8e7.rlib" "/home/vsts/work/1/s/target/debug/deps/libglutin_egl_sys-3190b5a215d54771.rlib" "/home/vsts/work/1/s/target/debug/deps/librsa_public_encrypt_pkcs1-139472cb166002a5.rlib" "/home/vsts/work/1/s/target/debug/deps/librand-e9f7131276f21e34.rlib" "/home/vsts/work/1/s/target/debug/deps/libsimple_asn1-7b5e2a0991fe79ac.rlib" "/home/vsts/work/1/s/target/debug/deps/libchrono-07e016c6cff6dabe.rlib" "/home/vsts/work/1/s/target/debug/deps/libnum-210395dea5228a72.rlib" "/home/vsts/work/1/s/target/debug/deps/libnum_rational-07b3d34a6e9f482f.rlib" "/home/vsts/work/1/s/target/debug/deps/libnum_complex-98d0e562e2b0bab9.rlib" "/home/vsts/work/1/s/target/debug/deps/libnum_bigint-282f93f3dd0e809f.rlib" 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"/home/vsts/work/1/s/target/debug/deps/libcpuid_bool-df935f4d27e3e567.rlib" "/home/vsts/work/1/s/target/debug/deps/libblock_buffer-b7c3286841a49b47.rlib" "/home/vsts/work/1/s/target/debug/deps/libdigest-16f87245f7db5709.rlib" "/home/vsts/work/1/s/target/debug/deps/libgeneric_array-cc1fcf30703a308d.rlib" "/home/vsts/work/1/s/target/debug/deps/libstd_or_web-ba428d044adb5e99.rlib" "/home/vsts/work/1/s/target/debug/deps/libreqwest-c2a681e002ec339d.rlib" "/home/vsts/work/1/s/target/debug/deps/libhyper_tls-3c097ecc8b62452a.rlib" "/home/vsts/work/1/s/target/debug/deps/libtokio_tls-4f927eb323b4cbd4.rlib" "/home/vsts/work/1/s/target/debug/deps/libencoding_rs-83301105375e8e45.rlib" "/home/vsts/work/1/s/target/debug/deps/libserde_urlencoded-8f19b88ca6c2ab59.rlib" "/home/vsts/work/1/s/target/debug/deps/libdtoa-9aad8c3954d90005.rlib" "/home/vsts/work/1/s/target/debug/deps/libbase64-35d36b32e89e26e9.rlib" "/home/vsts/work/1/s/target/debug/deps/libmime_guess-1ec4a01f39e38822.rlib" "/home/vsts/work/1/s/target/debug/deps/libunicase-d54184b575eadbce.rlib" "/home/vsts/work/1/s/target/debug/deps/libmime-62a2ece99e15cba9.rlib" "/home/vsts/work/1/s/target/debug/deps/libnative_tls-25081f71f0503114.rlib" "/home/vsts/work/1/s/target/debug/deps/libopenssl_probe-f0f2c582cbb5b03e.rlib" "/home/vsts/work/1/s/target/debug/deps/libopenssl-aa70710c3ed9c93e.rlib" "/home/vsts/work/1/s/target/debug/deps/libopenssl_sys-f747cb2fdf923e43.rlib" "/home/vsts/work/1/s/target/debug/deps/libforeign_types-fc075cee27f4ecbf.rlib" "/home/vsts/work/1/s/target/debug/deps/libforeign_types_shared-a3b7727b0ed95575.rlib" "/home/vsts/work/1/s/target/debug/deps/libbitflags-c0ff521b5d084059.rlib" "/home/vsts/work/1/s/target/debug/deps/libhyper-f8fb13782174bfb7.rlib" "/home/vsts/work/1/s/target/debug/deps/libhttparse-8ac58243716c1826.rlib" "/home/vsts/work/1/s/target/debug/deps/libwant-c6cd847bbcf5e387.rlib" "/home/vsts/work/1/s/target/debug/deps/libtry_lock-99947bce9c803066.rlib" "/home/vsts/work/1/s/target/debug/deps/libh2-19e484acb31be8ce.rlib" "/home/vsts/work/1/s/target/debug/deps/libindexmap-8318b2ba646e5b2c.rlib" "/home/vsts/work/1/s/target/debug/deps/libtokio_util-3b20f827c679c577.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_sink-4928f4dae28c297b.rlib" "/home/vsts/work/1/s/target/debug/deps/libtime-5aafc81fff789b1c.rlib" "/home/vsts/work/1/s/target/debug/deps/libsocket2-bad4a333da40263d.rlib" "/home/vsts/work/1/s/target/debug/deps/libtower_service-13698431dd14d542.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_channel-e0f811c553b27b5b.rlib" "/home/vsts/work/1/s/target/debug/deps/libtokio-fccd61f3c4a217c8.rlib" "/home/vsts/work/1/s/target/debug/deps/libnum_cpus-9c72963da6207a60.rlib" "/home/vsts/work/1/s/target/debug/deps/libmio-86cc1f42077e00cd.rlib" "/home/vsts/work/1/s/target/debug/deps/libiovec-604fc29dfed6bf03.rlib" "/home/vsts/work/1/s/target/debug/deps/libnet2-d628b305fc0a1f3f.rlib" "/home/vsts/work/1/s/target/debug/deps/liblibc-e399787615fc23f6.rlib" "/home/vsts/work/1/s/target/debug/deps/libpin_project_lite-2e749bf58e9ed1e0.rlib" "/home/vsts/work/1/s/target/debug/deps/libhttp_body-72ee43ba17f949cb.rlib" "/home/vsts/work/1/s/target/debug/deps/liblog-545f85ee37426543.rlib" "/home/vsts/work/1/s/target/debug/deps/libcfg_if-473466015cc2a243.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_util-7aff450d7c6a8ae3.rlib" "/home/vsts/work/1/s/target/debug/deps/libmemchr-fe566e318e28fd19.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_io-69e6bee7f0ad422b.rlib" "/home/vsts/work/1/s/target/debug/deps/libslab-c3304999dcea9e2d.rlib" "/home/vsts/work/1/s/target/debug/deps/libpin_project-4c42e699e8fc13b6.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_task-9e3557ed0f3f89e9.rlib" "/home/vsts/work/1/s/target/debug/deps/libonce_cell-94d47ffbf241fd37.rlib" "/home/vsts/work/1/s/target/debug/deps/libpin_utils-1dd5ee356cf1d566.rlib" "/home/vsts/work/1/s/target/debug/deps/libfutures_core-e6c795ea0da11100.rlib" "/home/vsts/work/1/s/target/debug/deps/liblazy_static-ea466f671dbe00d9.rlib" "/home/vsts/work/1/s/target/debug/deps/liburl-26466e2b49726761.rlib" "/home/vsts/work/1/s/target/debug/deps/libpercent_encoding-1ea669001f04278a.rlib" "/home/vsts/work/1/s/target/debug/deps/libidna-0ce3461cac7d3d34.rlib" "/home/vsts/work/1/s/target/debug/deps/libunicode_normalization-d9ced619e619ae19.rlib" "/home/vsts/work/1/s/target/debug/deps/libtinyvec-7bdcdea11e816cfe.rlib" "/home/vsts/work/1/s/target/debug/deps/libunicode_bidi-ecd1b77d8fabbd5d.rlib" "/home/vsts/work/1/s/target/debug/deps/libmatches-59073c0ce52a09a3.rlib" "/home/vsts/work/1/s/target/debug/deps/libhttp-f4dd656ae4351a6e.rlib" "/home/vsts/work/1/s/target/debug/deps/libbytes-470c73bc04a39304.rlib" "/home/vsts/work/1/s/target/debug/deps/libfnv-510fd01407348967.rlib" "/home/vsts/work/1/s/target/debug/deps/libhex-1f0a806b168beda8.rlib" "/home/vsts/work/1/s/target/debug/deps/libcfb8-e3bb3a1729f4b1a0.rlib" "/home/vsts/work/1/s/target/debug/deps/libstream_cipher-66ebe926e971161f.rlib" "/home/vsts/work/1/s/target/debug/deps/libaes-80f77a4fc6e820bb.rlib" "/home/vsts/work/1/s/target/debug/deps/libaes_soft-2ed2f51dd9bfa348.rlib" "/home/vsts/work/1/s/target/debug/deps/libopaque_debug-d269693bcf5545b8.rlib" "/home/vsts/work/1/s/target/debug/deps/libblock_cipher_trait-2f4f703870cdc324.rlib" "/home/vsts/work/1/s/target/debug/deps/libgeneric_array-d3189ee15ad461b0.rlib" "/home/vsts/work/1/s/target/debug/deps/libtypenum-49b20ea986ce4ae0.rlib" "/home/vsts/work/1/s/target/debug/deps/libbyteorder-67909a5d1994a43d.rlib" "/home/vsts/work/1/s/target/debug/deps/libserde_json-8a20d36fac199450.rlib" "/home/vsts/work/1/s/target/debug/deps/libryu-5745e8acd9115c72.rlib" "/home/vsts/work/1/s/target/debug/deps/libitoa-ddec09e578112e9b.rlib" "/home/vsts/work/1/s/target/debug/deps/libserde-96066a0a569f5542.rlib" "/home/vsts/work/1/s/target/debug/deps/libsteven_shared-74c7745ac9a86821.rlib" "-Wl,--start-group" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b6aff3703feff874.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-812457dcc335cb0e.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3b70323dc13665e.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-a72ca64738319f23.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-ae466ecb818a21c7.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8965f725fa371d94.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-f5d385bbcf1c0598.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-14d182d411047066.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-45730ad7fe9247a8.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-077a7bdb239ba92c.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/usr/share/rust/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-31151f98ccdb185a.rlib" "-Wl,-Bdynamic" "-lxcb" "-lxcb" "-lxcb" "-lxcb" "-lxcb-render" "-lxcb-shape" "-lxcb-xfixes" "-ldl" "-ldl" "-ldl" "-lssl" "-lcrypto" "-lutil" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
  = note: /usr/bin/ld: cannot find -lxcb-shape
          /usr/bin/ld: cannot find -lxcb-xfixes
          collect2: error: ld returned 1 exit status

https://stackoverflow.com/questions/55758892/missing-libraries-on-linux-with-rust-and-amethyst suggests installing missing libraries. script task from https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/?view=azure-devops

[iceiix]

Azure Pipelines builds completed successfully finally. https://dev.azure.com/iceix/ice_ix/_build/results?buildId=29&view=results

a pleasant surprise, Windows completed in 18m 19s, faster than AppVeyor https://ci.appveyor.com/project/iceiix/stevenarella/history 24 min 23 sec, 0.75x as long. Only pending build before this PR gets the green check is AppVeyor, still waiting (haven't removed yet). Currently tests on:

Linux	macOS	Windows
SourceHut, Azure	Azure	AppVeyor, Azure

[SuperSandro2000]

The main advantage over our current AppVeyor (Windows) and SourceHut (Linux) CI systems is Azure also supports macOS

Travis also supports mac.

[iceiix]

I had Travis-CI configured previously, but was hitting build cache timeout problems I couldn't solve so I disabled it (#173). This was not long after their ownership changed (https://twitter.com/carmatrocity/status/1098538649908666368), which may or may not be related, but it appeared Travis was becoming less reliable, maybe it is better now...

Also looked at CircleCI (#174) as another alternative but it aborted the build due to memory consumption, though that should be mitigated now by the fix in #267.