[INFO] fetching crate google-classroom1 2.0.8+20210323...
[INFO] building google-classroom1-2.0.8+20210323 against master#a7f375789bab1a4e4a291c963081a8ca7d2b6bd7 for pr-93180
[INFO] extracting crate google-classroom1 2.0.8+20210323 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate google-classroom1 2.0.8+20210323 on toolchain a7f375789bab1a4e4a291c963081a8ca7d2b6bd7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate google-classroom1 2.0.8+20210323
[INFO] finished tweaking crates.io crate google-classroom1 2.0.8+20210323
[INFO] tweaked toml for crates.io crate google-classroom1 2.0.8+20210323 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f1a5a7671214ac87eb8282898fdf81040361bab3f1857fd800fa0be95bb1d2b
[INFO] running `Command { std: "docker" "start" "-a" "9f1a5a7671214ac87eb8282898fdf81040361bab3f1857fd800fa0be95bb1d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f1a5a7671214ac87eb8282898fdf81040361bab3f1857fd800fa0be95bb1d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f1a5a7671214ac87eb8282898fdf81040361bab3f1857fd800fa0be95bb1d2b", kill_on_drop: false }`
[INFO] [stdout] 9f1a5a7671214ac87eb8282898fdf81040361bab3f1857fd800fa0be95bb1d2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bbf60b16ffd4bc488637e1ae733628bf76d2867994de235e0ae8be8b70d574d
[INFO] running `Command { std: "docker" "start" "-a" "4bbf60b16ffd4bc488637e1ae733628bf76d2867994de235e0ae8be8b70d574d", kill_on_drop: false }`
[INFO] [stderr]    Compiling google-classroom1 v2.0.8+20210323 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.06s
[INFO] running `Command { std: "docker" "inspect" "4bbf60b16ffd4bc488637e1ae733628bf76d2867994de235e0ae8be8b70d574d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bbf60b16ffd4bc488637e1ae733628bf76d2867994de235e0ae8be8b70d574d", kill_on_drop: false }`
[INFO] [stdout] 4bbf60b16ffd4bc488637e1ae733628bf76d2867994de235e0ae8be8b70d574d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+a7f375789bab1a4e4a291c963081a8ca7d2b6bd7" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63da55d7e3771e24059925ce01f07a3cf4c8b56fdc459fa93d4a148aee8c4d32
[INFO] running `Command { std: "docker" "start" "-a" "63da55d7e3771e24059925ce01f07a3cf4c8b56fdc459fa93d4a148aee8c4d32", kill_on_drop: false }`
[INFO] [stderr]    Compiling google-classroom1 v2.0.8+20210323 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.63s
[INFO] running `Command { std: "docker" "inspect" "63da55d7e3771e24059925ce01f07a3cf4c8b56fdc459fa93d4a148aee8c4d32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63da55d7e3771e24059925ce01f07a3cf4c8b56fdc459fa93d4a148aee8c4d32", kill_on_drop: false }`
[INFO] [stdout] 63da55d7e3771e24059925ce01f07a3cf4c8b56fdc459fa93d4a148aee8c4d32