[INFO] fetching crate y4m 0.7.0...
[INFO] checking y4m-0.7.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate y4m 0.7.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate y4m 0.7.0 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 y4m 0.7.0
[INFO] finished tweaking crates.io crate y4m 0.7.0
[INFO] tweaked toml for crates.io crate y4m 0.7.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate y4m 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 553bfd9ce660790d07100ee16ada1a806c2e3bef34cdbb6589ea2bffa09ffe5a
[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" "553bfd9ce660790d07100ee16ada1a806c2e3bef34cdbb6589ea2bffa09ffe5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "553bfd9ce660790d07100ee16ada1a806c2e3bef34cdbb6589ea2bffa09ffe5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "553bfd9ce660790d07100ee16ada1a806c2e3bef34cdbb6589ea2bffa09ffe5a", kill_on_drop: false }`
[INFO] [stdout] 553bfd9ce660790d07100ee16ada1a806c2e3bef34cdbb6589ea2bffa09ffe5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 70da7bf3e361d6174686f6ec1e478306d3e73ca7ceec12e46faed444f230c432
[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" "70da7bf3e361d6174686f6ec1e478306d3e73ca7ceec12e46faed444f230c432", kill_on_drop: false }`
[INFO] [stderr]     Checking resize v0.4.3
[INFO] [stderr]     Checking y4m v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "70da7bf3e361d6174686f6ec1e478306d3e73ca7ceec12e46faed444f230c432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70da7bf3e361d6174686f6ec1e478306d3e73ca7ceec12e46faed444f230c432", kill_on_drop: false }`
[INFO] [stdout] 70da7bf3e361d6174686f6ec1e478306d3e73ca7ceec12e46faed444f230c432