[INFO] fetching crate display_attr 0.1.1...
[INFO] checking display_attr-0.1.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate display_attr 0.1.1 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate display_attr 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate display_attr 0.1.1
[INFO] finished tweaking crates.io crate display_attr 0.1.1
[INFO] tweaked toml for crates.io crate display_attr 0.1.1 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 647774f7fafb1f82c857fe1b1a59378a7c4617d000e39d2da7c7343d093ebb97
[INFO] running `Command { std: "docker" "start" "-a" "647774f7fafb1f82c857fe1b1a59378a7c4617d000e39d2da7c7343d093ebb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "647774f7fafb1f82c857fe1b1a59378a7c4617d000e39d2da7c7343d093ebb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "647774f7fafb1f82c857fe1b1a59378a7c4617d000e39d2da7c7343d093ebb97", kill_on_drop: false }`
[INFO] [stdout] 647774f7fafb1f82c857fe1b1a59378a7c4617d000e39d2da7c7343d093ebb97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f9adb3920439fee957f59f44d1181b66402867daaa0752035006d524bddb091
[INFO] running `Command { std: "docker" "start" "-a" "1f9adb3920439fee957f59f44d1181b66402867daaa0752035006d524bddb091", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.14.9
[INFO] [stderr]     Checking display_attr v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.50s
[INFO] running `Command { std: "docker" "inspect" "1f9adb3920439fee957f59f44d1181b66402867daaa0752035006d524bddb091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f9adb3920439fee957f59f44d1181b66402867daaa0752035006d524bddb091", kill_on_drop: false }`
[INFO] [stdout] 1f9adb3920439fee957f59f44d1181b66402867daaa0752035006d524bddb091
