[INFO] fetching crate bufro 0.1.7...
[INFO] checking bufro-0.1.7 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate bufro 0.1.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate bufro 0.1.7 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "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-12/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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a63c981eeecebe4412984316177b0d2732a4deaaa798f2828542a6bc14d4e7a1
[INFO] running `Command { std: "docker" "start" "-a" "a63c981eeecebe4412984316177b0d2732a4deaaa798f2828542a6bc14d4e7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a63c981eeecebe4412984316177b0d2732a4deaaa798f2828542a6bc14d4e7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a63c981eeecebe4412984316177b0d2732a4deaaa798f2828542a6bc14d4e7a1", kill_on_drop: false }`
[INFO] [stdout] a63c981eeecebe4412984316177b0d2732a4deaaa798f2828542a6bc14d4e7a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825bcb30d71bd1b162685206d75a08ab9124e325e27594c71ec3bea352e2da33
[INFO] running `Command { std: "docker" "start" "-a" "825bcb30d71bd1b162685206d75a08ab9124e325e27594c71ec3bea352e2da33", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling cgmath v0.18.0
[INFO] [stderr]     Checking glow v0.9.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]     Checking rusttype v0.9.2
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[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 osmesa-sys v0.1.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking bufro v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking wayland-commons v0.28.5
[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 14.99s
[INFO] running `Command { std: "docker" "inspect" "825bcb30d71bd1b162685206d75a08ab9124e325e27594c71ec3bea352e2da33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825bcb30d71bd1b162685206d75a08ab9124e325e27594c71ec3bea352e2da33", kill_on_drop: false }`
[INFO] [stdout] 825bcb30d71bd1b162685206d75a08ab9124e325e27594c71ec3bea352e2da33