[INFO] fetching crate courses 0.7.5...
[INFO] checking courses-0.7.5 against try#8ce16caa975da810c768ab50cc10f47a50531548 for pr-115538
[INFO] extracting crate courses 0.7.5 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate courses 0.7.5 on toolchain 8ce16caa975da810c768ab50cc10f47a50531548
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8ce16caa975da810c768ab50cc10f47a50531548" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate courses 0.7.5
[INFO] finished tweaking crates.io crate courses 0.7.5
[INFO] tweaked toml for crates.io crate courses 0.7.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate courses 0.7.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8ce16caa975da810c768ab50cc10f47a50531548" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:8d77639b970c52ec67607038b3ec48894629de24504b62a68269497566821cc0" "/opt/rustwide/cargo-home/bin/cargo" "+8ce16caa975da810c768ab50cc10f47a50531548" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fa685bccc947b9e1c36cc78685eb6b74fe2b96d311a0d193bd89eaf050b4104
[INFO] running `Command { std: "docker" "start" "-a" "0fa685bccc947b9e1c36cc78685eb6b74fe2b96d311a0d193bd89eaf050b4104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fa685bccc947b9e1c36cc78685eb6b74fe2b96d311a0d193bd89eaf050b4104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa685bccc947b9e1c36cc78685eb6b74fe2b96d311a0d193bd89eaf050b4104", kill_on_drop: false }`
[INFO] [stdout] 0fa685bccc947b9e1c36cc78685eb6b74fe2b96d311a0d193bd89eaf050b4104
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:8d77639b970c52ec67607038b3ec48894629de24504b62a68269497566821cc0" "/opt/rustwide/cargo-home/bin/cargo" "+8ce16caa975da810c768ab50cc10f47a50531548" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 560bbc1813173a0b4321a1a725f2d91d8a065643f1bd74c11c12e729bdd5c80c
[INFO] running `Command { std: "docker" "start" "-a" "560bbc1813173a0b4321a1a725f2d91d8a065643f1bd74c11c12e729bdd5c80c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
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[INFO] [stderr]     Checking courses v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.99s
[INFO] running `Command { std: "docker" "inspect" "560bbc1813173a0b4321a1a725f2d91d8a065643f1bd74c11c12e729bdd5c80c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560bbc1813173a0b4321a1a725f2d91d8a065643f1bd74c11c12e729bdd5c80c", kill_on_drop: false }`
[INFO] [stdout] 560bbc1813173a0b4321a1a725f2d91d8a065643f1bd74c11c12e729bdd5c80c