[INFO] fetching crate a_example 0.1.2...
[INFO] checking a_example-0.1.2 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate a_example 0.1.2 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate a_example 0.1.2 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate a_example 0.1.2
[INFO] finished tweaking crates.io crate a_example 0.1.2
[INFO] tweaked toml for crates.io crate a_example 0.1.2 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate crates.io crate a_example 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe70e64126297030db8063721d99f7c2ace23293efdb30a456e17d3776380208
[INFO] running `Command { std: "docker" "start" "-a" "fe70e64126297030db8063721d99f7c2ace23293efdb30a456e17d3776380208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe70e64126297030db8063721d99f7c2ace23293efdb30a456e17d3776380208", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe70e64126297030db8063721d99f7c2ace23293efdb30a456e17d3776380208", kill_on_drop: false }`
[INFO] [stdout] fe70e64126297030db8063721d99f7c2ace23293efdb30a456e17d3776380208
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a0ab84c7f330e5ff97298b3ea08f82c59e15a8f77bd118070566fdf73b5536b
[INFO] running `Command { std: "docker" "start" "-a" "1a0ab84c7f330e5ff97298b3ea08f82c59e15a8f77bd118070566fdf73b5536b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking a_example v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "1a0ab84c7f330e5ff97298b3ea08f82c59e15a8f77bd118070566fdf73b5536b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a0ab84c7f330e5ff97298b3ea08f82c59e15a8f77bd118070566fdf73b5536b", kill_on_drop: false }`
[INFO] [stdout] 1a0ab84c7f330e5ff97298b3ea08f82c59e15a8f77bd118070566fdf73b5536b