[INFO] fetching crate vec_saver 0.0.2...
[INFO] checking vec_saver-0.0.2 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate vec_saver 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate vec_saver 0.0.2 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vec_saver 0.0.2
[INFO] finished tweaking crates.io crate vec_saver 0.0.2
[INFO] tweaked toml for crates.io crate vec_saver 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 581932672d1be7f21cc7279db26185653223335aa69410b2830bef4f0435527a
[INFO] running `Command { std: "docker" "start" "-a" "581932672d1be7f21cc7279db26185653223335aa69410b2830bef4f0435527a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "581932672d1be7f21cc7279db26185653223335aa69410b2830bef4f0435527a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "581932672d1be7f21cc7279db26185653223335aa69410b2830bef4f0435527a", kill_on_drop: false }`
[INFO] [stdout] 581932672d1be7f21cc7279db26185653223335aa69410b2830bef4f0435527a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1d6c0203260ce538cf1a7a0d80736a8735ab2f0230d2514da3b4ce61c26e71a
[INFO] running `Command { std: "docker" "start" "-a" "e1d6c0203260ce538cf1a7a0d80736a8735ab2f0230d2514da3b4ce61c26e71a", kill_on_drop: false }`
[INFO] [stderr]     Checking vec_saver v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "e1d6c0203260ce538cf1a7a0d80736a8735ab2f0230d2514da3b4ce61c26e71a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d6c0203260ce538cf1a7a0d80736a8735ab2f0230d2514da3b4ce61c26e71a", kill_on_drop: false }`
[INFO] [stdout] e1d6c0203260ce538cf1a7a0d80736a8735ab2f0230d2514da3b4ce61c26e71a