[INFO] fetching crate cognitive-aesthetics 0.1.0...
[INFO] checking cognitive-aesthetics-0.1.0 against beta for pr-78714
[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 beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", 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" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e716435697834c303cf0128ccc2926c35bd33df1c1e46cd24f1e5b7740da4035
[INFO] running `Command { std: "docker" "start" "-a" "e716435697834c303cf0128ccc2926c35bd33df1c1e46cd24f1e5b7740da4035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e716435697834c303cf0128ccc2926c35bd33df1c1e46cd24f1e5b7740da4035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e716435697834c303cf0128ccc2926c35bd33df1c1e46cd24f1e5b7740da4035", kill_on_drop: false }`
[INFO] [stdout] e716435697834c303cf0128ccc2926c35bd33df1c1e46cd24f1e5b7740da4035
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21bb3076f9fd179a44af4c0448a4c8a5d095496f3ce632c69c1e5fef9cbbac08
[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" "21bb3076f9fd179a44af4c0448a4c8a5d095496f3ce632c69c1e5fef9cbbac08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]    Compiling silverknife-fontconfig-sys v0.1.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking timerfd v0.2.0
[INFO] [stderr]     Checking gbm-rs v0.2.0
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking timber v0.1.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking khronos v0.1.2
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking egl v0.2.7
[INFO] [stderr]     Checking stb_truetype v0.2.8
[INFO] [stderr]     Checking font-loader v0.2.0
[INFO] [stderr]     Checking rusttype v0.2.4
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]     Checking dharma v0.1.0
[INFO] [stderr]     Checking cognitive-graphics v0.1.0
[INFO] [stderr]     Checking cognitive-qualia v0.1.0
[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: 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.73s
[INFO] running `Command { std: "docker" "inspect" "21bb3076f9fd179a44af4c0448a4c8a5d095496f3ce632c69c1e5fef9cbbac08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21bb3076f9fd179a44af4c0448a4c8a5d095496f3ce632c69c1e5fef9cbbac08", kill_on_drop: false }`
[INFO] [stdout] 21bb3076f9fd179a44af4c0448a4c8a5d095496f3ce632c69c1e5fef9cbbac08