[INFO] fetching crate cognitive-aesthetics 0.1.0...
[INFO] checking cognitive-aesthetics-0.1.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate cognitive-aesthetics 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cognitive-aesthetics 0.1.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cognitive-aesthetics 0.1.0
[INFO] finished tweaking crates.io crate cognitive-aesthetics 0.1.0
[INFO] tweaked toml for crates.io crate cognitive-aesthetics 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a81c055d0bcd5e9428cb5ae44d26082e95edd127e22f48338d4bf582d002f239
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a81c055d0bcd5e9428cb5ae44d26082e95edd127e22f48338d4bf582d002f239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a81c055d0bcd5e9428cb5ae44d26082e95edd127e22f48338d4bf582d002f239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81c055d0bcd5e9428cb5ae44d26082e95edd127e22f48338d4bf582d002f239", kill_on_drop: false }`
[INFO] [stdout] a81c055d0bcd5e9428cb5ae44d26082e95edd127e22f48338d4bf582d002f239
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35672878dad10629f39a5f47306d3e5e48267a34f9fde5dd7b8f778ae9d56831
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "35672878dad10629f39a5f47306d3e5e48267a34f9fde5dd7b8f778ae9d56831", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.58
[INFO] [stderr]    Compiling silverknife-fontconfig-sys v0.1.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking timerfd v0.2.0
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking cognitive-graphics v0.1.0
[INFO] [stderr]     Checking font-loader v0.2.0
[INFO] [stderr]     Checking stb_truetype v0.2.8
[INFO] [stderr]     Checking timber v0.1.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking rusttype v0.2.4
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking dharma v0.1.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking cognitive-qualia v0.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking cognitive-aesthetics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/panels.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut data = buffer.as_mut_slice();
[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/panels.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut data = buffer.as_mut_slice();
[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 [unoptimized + debuginfo] target(s) in 45.50s
[INFO] running `Command { std: "docker" "inspect" "35672878dad10629f39a5f47306d3e5e48267a34f9fde5dd7b8f778ae9d56831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35672878dad10629f39a5f47306d3e5e48267a34f9fde5dd7b8f778ae9d56831", kill_on_drop: false }`
[INFO] [stdout] 35672878dad10629f39a5f47306d3e5e48267a34f9fde5dd7b8f778ae9d56831