[INFO] fetching crate alchemyst 0.15.0...
[INFO] checking alchemyst-0.15.0 against master#18a6d911caba59605eb03db1452848a85d2e5879 for pr-112743
[INFO] extracting crate alchemyst 0.15.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate alchemyst 0.15.0 on toolchain 18a6d911caba59605eb03db1452848a85d2e5879
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alchemyst 0.15.0
[INFO] finished tweaking crates.io crate alchemyst 0.15.0
[INFO] tweaked toml for crates.io crate alchemyst 0.15.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate alchemyst 0.15.0 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" "+18a6d911caba59605eb03db1452848a85d2e5879" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b126887debef54d09a2a9fd59b1d5ea2ef6327cb19e31c0472db4be0526f6c2e
[INFO] running `Command { std: "docker" "start" "-a" "b126887debef54d09a2a9fd59b1d5ea2ef6327cb19e31c0472db4be0526f6c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b126887debef54d09a2a9fd59b1d5ea2ef6327cb19e31c0472db4be0526f6c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b126887debef54d09a2a9fd59b1d5ea2ef6327cb19e31c0472db4be0526f6c2e", kill_on_drop: false }`
[INFO] [stdout] b126887debef54d09a2a9fd59b1d5ea2ef6327cb19e31c0472db4be0526f6c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4eb9a819703ecdb121e1550055839de7925f98e8b0ac86c9bcdcd591841f7f45
[INFO] running `Command { std: "docker" "start" "-a" "4eb9a819703ecdb121e1550055839de7925f98e8b0ac86c9bcdcd591841f7f45", kill_on_drop: false }`
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[INFO] [stderr]     Checking alchemyst v0.15.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.89s
[INFO] running `Command { std: "docker" "inspect" "4eb9a819703ecdb121e1550055839de7925f98e8b0ac86c9bcdcd591841f7f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eb9a819703ecdb121e1550055839de7925f98e8b0ac86c9bcdcd591841f7f45", kill_on_drop: false }`
[INFO] [stdout] 4eb9a819703ecdb121e1550055839de7925f98e8b0ac86c9bcdcd591841f7f45