[INFO] cloning repository https://github.com/Matthias-Fauconneau/side
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Matthias-Fauconneau/side" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthias-Fauconneau%2Fside", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthias-Fauconneau%2Fside'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e267d1c97142cd8fe3612355f4adf9b62e405a5
[INFO] checking Matthias-Fauconneau/side against master#84e729a59f216cc64755788a470f165429a731f4 for pr-123737-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthias-Fauconneau%2Fside" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Matthias-Fauconneau/side on toolchain 84e729a59f216cc64755788a470f165429a731f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84e729a59f216cc64755788a470f165429a731f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Matthias-Fauconneau/side
[INFO] finished tweaking git repo https://github.com/Matthias-Fauconneau/side
[INFO] tweaked toml for git repo https://github.com/Matthias-Fauconneau/side written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Matthias-Fauconneau/side already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84e729a59f216cc64755788a470f165429a731f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+84e729a59f216cc64755788a470f165429a731f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 489e19db24008527c98c189c94ad807b541488797ee015a5934baf64eb4d0a71
[INFO] running `Command { std: "docker" "start" "-a" "489e19db24008527c98c189c94ad807b541488797ee015a5934baf64eb4d0a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "489e19db24008527c98c189c94ad807b541488797ee015a5934baf64eb4d0a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "489e19db24008527c98c189c94ad807b541488797ee015a5934baf64eb4d0a71", kill_on_drop: false }`
[INFO] [stdout] 489e19db24008527c98c189c94ad807b541488797ee015a5934baf64eb4d0a71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+84e729a59f216cc64755788a470f165429a731f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 330c2a569e0568c58172275b32859f4c91352d8cde5d427848ac25488785b8ee
[INFO] running `Command { std: "docker" "start" "-a" "330c2a569e0568c58172275b32859f4c91352d8cde5d427848ac25488785b8ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling xml-rs v0.8.16
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking fdeflate v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking ttf-parser v0.19.1
[INFO] [stderr]    Compiling x11rb v0.12.0
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking tiny-skia-path v0.8.4
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling wayland-sys v0.30.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stderr]    Compiling softbuffer v0.3.0
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking as-raw-xcb-connection v1.0.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking bitflags v2.0.2
[INFO] [stderr]    Compiling cc v1.0.80
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling quick-xml v0.28.2
[INFO] [stderr]     Checking png v0.17.9
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]    Compiling winit v0.28.6
[INFO] [stderr]    Compiling wayland-scanner v0.30.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking tiny-skia v0.8.4
[INFO] [stderr]     Checking gethostname v0.3.0
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking memmap2 v0.6.2
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]    Compiling wayland-backend v0.1.2
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
[INFO] [stderr]     Checking ab_glyph v0.2.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]     Checking calloop v0.10.6
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]     Checking x11rb-protocol v0.12.0
[INFO] [stderr]     Checking serialport v4.2.1
[INFO] [stderr]     Checking wayland-client v0.30.2
[INFO] [stderr]     Checking sctk-adwaita v0.5.4
[INFO] [stderr]     Checking side v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:59
[INFO] [stdout]    |
[INFO] [stdout] 28 |     assert_eq!(command(&mut hmd, "set2d3d 0"), "OK"); let mut software_stereo_side_by_side = false;
[INFO] [stdout]    |                                                           ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                           |
[INFO] [stdout]    |                                                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:59
[INFO] [stdout]    |
[INFO] [stdout] 28 |     assert_eq!(command(&mut hmd, "set2d3d 0"), "OK"); let mut software_stereo_side_by_side = false;
[INFO] [stdout]    |                                                           ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                           |
[INFO] [stdout]    |                                                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.10s
[INFO] running `Command { std: "docker" "inspect" "330c2a569e0568c58172275b32859f4c91352d8cde5d427848ac25488785b8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "330c2a569e0568c58172275b32859f4c91352d8cde5d427848ac25488785b8ee", kill_on_drop: false }`
[INFO] [stdout] 330c2a569e0568c58172275b32859f4c91352d8cde5d427848ac25488785b8ee
[INFO] checking Matthias-Fauconneau/side against try#8d9ad7790f77ffaa434059a58807949d4583c045 for pr-123737-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMatthias-Fauconneau%2Fside" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Matthias-Fauconneau/side on toolchain 8d9ad7790f77ffaa434059a58807949d4583c045
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d9ad7790f77ffaa434059a58807949d4583c045" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Matthias-Fauconneau/side
[INFO] finished tweaking git repo https://github.com/Matthias-Fauconneau/side
[INFO] tweaked toml for git repo https://github.com/Matthias-Fauconneau/side written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Matthias-Fauconneau/side already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d9ad7790f77ffaa434059a58807949d4583c045" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8d9ad7790f77ffaa434059a58807949d4583c045" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17b70c638ea8ed87eee3e7ea8d6d464dff629a5ad8517b95bfb7dd416709fc72
[INFO] running `Command { std: "docker" "start" "-a" "17b70c638ea8ed87eee3e7ea8d6d464dff629a5ad8517b95bfb7dd416709fc72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17b70c638ea8ed87eee3e7ea8d6d464dff629a5ad8517b95bfb7dd416709fc72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17b70c638ea8ed87eee3e7ea8d6d464dff629a5ad8517b95bfb7dd416709fc72", kill_on_drop: false }`
[INFO] [stdout] 17b70c638ea8ed87eee3e7ea8d6d464dff629a5ad8517b95bfb7dd416709fc72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8d9ad7790f77ffaa434059a58807949d4583c045" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 489278a3f7f16bf0c76df7f00cf24431b5858603fa70136303f9298c00ecbe78
[INFO] running `Command { std: "docker" "start" "-a" "489278a3f7f16bf0c76df7f00cf24431b5858603fa70136303f9298c00ecbe78", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]    Compiling xml-rs v0.8.16
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling thiserror v1.0.44
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking fdeflate v0.3.0
[INFO] [stderr]     Checking ttf-parser v0.19.1
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]    Compiling x11rb v0.12.0
[INFO] [stderr]     Checking tiny-skia-path v0.8.4
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling wayland-sys v0.30.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling softbuffer v0.3.0
[INFO] [stderr]     Checking as-raw-xcb-connection v1.0.0
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling quick-xml v0.28.2
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking bitflags v2.0.2
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking png v0.17.9
[INFO] [stderr]    Compiling cc v1.0.80
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking gethostname v0.3.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking memmap2 v0.6.2
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking tiny-skia v0.8.4
[INFO] [stderr]    Compiling wayland-scanner v0.30.1
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
[INFO] [stderr]    Compiling wayland-backend v0.1.2
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]    Compiling winit v0.28.6
[INFO] [stderr]     Checking ab_glyph v0.2.21
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.44
[INFO] [stderr]     Checking wayland-commons v0.29.5
[INFO] [stderr]     Checking wayland-cursor v0.29.5
[INFO] [stderr]     Checking calloop v0.10.6
[INFO] [stderr]     Checking x11rb-protocol v0.12.0
[INFO] [stderr]     Checking serialport v4.2.1
[INFO] [stderr]     Checking wayland-client v0.30.2
[INFO] [stderr]     Checking sctk-adwaita v0.5.4
[INFO] [stderr]     Checking side v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:59
[INFO] [stdout]    |
[INFO] [stdout] 28 |     assert_eq!(command(&mut hmd, "set2d3d 0"), "OK"); let mut software_stereo_side_by_side = false;
[INFO] [stdout]    |                                                           ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                           |
[INFO] [stdout]    |                                                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:59
[INFO] [stdout]    |
[INFO] [stdout] 28 |     assert_eq!(command(&mut hmd, "set2d3d 0"), "OK"); let mut software_stereo_side_by_side = false;
[INFO] [stdout]    |                                                           ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                           |
[INFO] [stdout]    |                                                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.06s
[INFO] running `Command { std: "docker" "inspect" "489278a3f7f16bf0c76df7f00cf24431b5858603fa70136303f9298c00ecbe78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "489278a3f7f16bf0c76df7f00cf24431b5858603fa70136303f9298c00ecbe78", kill_on_drop: false }`
[INFO] [stdout] 489278a3f7f16bf0c76df7f00cf24431b5858603fa70136303f9298c00ecbe78