[INFO] fetching crate cargo-yaml 3.0.0...
[INFO] checking cargo-yaml-3.0.0 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate cargo-yaml 3.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cargo-yaml 3.0.0 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-yaml 3.0.0
[INFO] finished tweaking crates.io crate cargo-yaml 3.0.0
[INFO] tweaked toml for crates.io crate cargo-yaml 3.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] c23dc27f674650992a3bc7d05758756727ad41a1670255e2b8a55488e4dcb323
[INFO] running `Command { std: "docker" "start" "-a" "c23dc27f674650992a3bc7d05758756727ad41a1670255e2b8a55488e4dcb323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c23dc27f674650992a3bc7d05758756727ad41a1670255e2b8a55488e4dcb323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c23dc27f674650992a3bc7d05758756727ad41a1670255e2b8a55488e4dcb323", kill_on_drop: false }`
[INFO] [stdout] c23dc27f674650992a3bc7d05758756727ad41a1670255e2b8a55488e4dcb323
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 830627dee71fefda1fc64348167ebfae248944bca2d116b730e6bc92c21e780c
[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" "830627dee71fefda1fc64348167ebfae248944bca2d116b730e6bc92c21e780c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]     Checking cargo-yaml v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `color`
[INFO] [stdout]   --> src/main.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 |         pub fn color(&self) -> Color {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_enabled`
[INFO] [stdout]   --> src/main.rs:96:16
[INFO] [stdout]    |
[INFO] [stdout] 96 |         pub fn is_enabled(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `color`
[INFO] [stdout]   --> src/main.rs:75:16
[INFO] [stdout]    |
[INFO] [stdout] 75 |         pub fn color(&self) -> Color {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_enabled`
[INFO] [stdout]   --> src/main.rs:96:16
[INFO] [stdout]    |
[INFO] [stdout] 96 |         pub fn is_enabled(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.12s
[INFO] running `Command { std: "docker" "inspect" "830627dee71fefda1fc64348167ebfae248944bca2d116b730e6bc92c21e780c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "830627dee71fefda1fc64348167ebfae248944bca2d116b730e6bc92c21e780c", kill_on_drop: false }`
[INFO] [stdout] 830627dee71fefda1fc64348167ebfae248944bca2d116b730e6bc92c21e780c