[INFO] fetching crate bufro 0.1.7...
[INFO] checking bufro-0.1.7 against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] extracting crate bufro 0.1.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate bufro 0.1.7 on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bufro 0.1.7
[INFO] finished tweaking crates.io crate bufro 0.1.7
[INFO] tweaked toml for crates.io crate bufro 0.1.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate bufro 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dlib v0.5.0
[INFO] [stderr]   Downloaded glutin v0.26.0
[INFO] [stderr]   Downloaded glow v0.9.0
[INFO] [stderr]   Downloaded wayland-scanner v0.28.5
[INFO] [stderr]   Downloaded wayland-egl v0.28.5
[INFO] [stderr]   Downloaded cocoa v0.23.0
[INFO] [stderr]   Downloaded wayland-cursor v0.28.5
[INFO] [stderr]   Downloaded wayland-client v0.28.5
[INFO] [stderr]   Downloaded wayland-sys v0.28.5
[INFO] [stderr]   Downloaded wayland-protocols v0.28.5
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.12.3
[INFO] [stderr]   Downloaded wayland-commons v0.28.5
[INFO] [stderr]   Downloaded cgmath v0.18.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537626c7dfb4f14350ca0fd9478e231c7505cbbf26b9f00e64e2669d4ddeab4a
[INFO] running `Command { std: "docker" "start" "-a" "537626c7dfb4f14350ca0fd9478e231c7505cbbf26b9f00e64e2669d4ddeab4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537626c7dfb4f14350ca0fd9478e231c7505cbbf26b9f00e64e2669d4ddeab4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537626c7dfb4f14350ca0fd9478e231c7505cbbf26b9f00e64e2669d4ddeab4a", kill_on_drop: false }`
[INFO] [stdout] 537626c7dfb4f14350ca0fd9478e231c7505cbbf26b9f00e64e2669d4ddeab4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8aa4cb7d050263e03afc4033b609db753d98432df059fb500aadaf07ee12d33
[INFO] running `Command { std: "docker" "start" "-a" "f8aa4cb7d050263e03afc4033b609db753d98432df059fb500aadaf07ee12d33", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]     Checking glow v0.9.0
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]     Checking wayland-commons v0.28.5
[INFO] [stderr]     Checking bufro v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking wayland-cursor v0.28.5
[INFO] [stderr]     Checking wayland-egl v0.28.5
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]     Checking winit v0.24.0
[INFO] [stderr]     Checking glutin v0.26.0
[INFO] [stdout] warning: value assigned to `width` is never read
[INFO] [stdout]   --> examples/alpha.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...                   width = physical_size.width;
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `height` is never read
[INFO] [stdout]   --> examples/alpha.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   height = physical_size.height;
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> examples/alpha.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...                   width = physical_size.width;
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> examples/alpha.rs:56:29
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   height = physical_size.height;
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.61s
[INFO] running `Command { std: "docker" "inspect" "f8aa4cb7d050263e03afc4033b609db753d98432df059fb500aadaf07ee12d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8aa4cb7d050263e03afc4033b609db753d98432df059fb500aadaf07ee12d33", kill_on_drop: false }`
[INFO] [stdout] f8aa4cb7d050263e03afc4033b609db753d98432df059fb500aadaf07ee12d33