[INFO] fetching crate flat-token 0.0.1...
[INFO] checking flat-token-0.0.1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate flat-token 0.0.1 into /workspace/builds/worker-93/source
[INFO] validating manifest of crates.io crate flat-token 0.0.1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flat-token 0.0.1
[INFO] finished tweaking crates.io crate flat-token 0.0.1
[INFO] tweaked toml for crates.io crate flat-token 0.0.1 written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a281025d6c303fb8d1eb3a179f594602a36aa5f4ea318f288f87db77ef059452
[INFO] running `Command { std: "docker" "start" "-a" "a281025d6c303fb8d1eb3a179f594602a36aa5f4ea318f288f87db77ef059452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a281025d6c303fb8d1eb3a179f594602a36aa5f4ea318f288f87db77ef059452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a281025d6c303fb8d1eb3a179f594602a36aa5f4ea318f288f87db77ef059452", kill_on_drop: false }`
[INFO] [stdout] a281025d6c303fb8d1eb3a179f594602a36aa5f4ea318f288f87db77ef059452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a83d1804325384a5337f17ff6882153f9c3b77d400032bba6bd45b42c342d94d
[INFO] running `Command { std: "docker" "start" "-a" "a83d1804325384a5337f17ff6882153f9c3b77d400032bba6bd45b42c342d94d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking flat-token v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.47s
[INFO] running `Command { std: "docker" "inspect" "a83d1804325384a5337f17ff6882153f9c3b77d400032bba6bd45b42c342d94d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a83d1804325384a5337f17ff6882153f9c3b77d400032bba6bd45b42c342d94d", kill_on_drop: false }`
[INFO] [stdout] a83d1804325384a5337f17ff6882153f9c3b77d400032bba6bd45b42c342d94d