[INFO] fetching crate a_example 0.1.2...
[INFO] checking a_example-0.1.2 against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] extracting crate a_example 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate a_example 0.1.2 on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "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-4/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" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86d402339e0445674471cfbf4d03a1eec1eb5ec8c7aa5dae231da23a447ca453
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "86d402339e0445674471cfbf4d03a1eec1eb5ec8c7aa5dae231da23a447ca453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86d402339e0445674471cfbf4d03a1eec1eb5ec8c7aa5dae231da23a447ca453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d402339e0445674471cfbf4d03a1eec1eb5ec8c7aa5dae231da23a447ca453", kill_on_drop: false }`
[INFO] [stdout] 86d402339e0445674471cfbf4d03a1eec1eb5ec8c7aa5dae231da23a447ca453
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbc338e462dacea1b9bd8d4c451ce6ef14523edd84e6c6cdf607ce8bc3836feb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dbc338e462dacea1b9bd8d4c451ce6ef14523edd84e6c6cdf607ce8bc3836feb", kill_on_drop: false }`
[INFO] [stderr]     Checking a_example v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "dbc338e462dacea1b9bd8d4c451ce6ef14523edd84e6c6cdf607ce8bc3836feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbc338e462dacea1b9bd8d4c451ce6ef14523edd84e6c6cdf607ce8bc3836feb", kill_on_drop: false }`
[INFO] [stdout] dbc338e462dacea1b9bd8d4c451ce6ef14523edd84e6c6cdf607ce8bc3836feb