[INFO] fetching crate safe_cell 0.1.1...
[INFO] checking safe_cell-0.1.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate safe_cell 0.1.1 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate safe_cell 0.1.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate safe_cell 0.1.1
[INFO] finished tweaking crates.io crate safe_cell 0.1.1
[INFO] tweaked toml for crates.io crate safe_cell 0.1.1 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c9e50a20ca88b15a90a235db9b43638b2f89773ed794b6dbe02c4be1a8462a9
[INFO] running `Command { std: "docker" "start" "-a" "7c9e50a20ca88b15a90a235db9b43638b2f89773ed794b6dbe02c4be1a8462a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c9e50a20ca88b15a90a235db9b43638b2f89773ed794b6dbe02c4be1a8462a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c9e50a20ca88b15a90a235db9b43638b2f89773ed794b6dbe02c4be1a8462a9", kill_on_drop: false }`
[INFO] [stdout] 7c9e50a20ca88b15a90a235db9b43638b2f89773ed794b6dbe02c4be1a8462a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7daf50b6ac5f11e7b91a42c01f2c8749f6b3c2ca3f65ffc29315a16d06c0cf9
[INFO] running `Command { std: "docker" "start" "-a" "f7daf50b6ac5f11e7b91a42c01f2c8749f6b3c2ca3f65ffc29315a16d06c0cf9", kill_on_drop: false }`
[INFO] [stderr]     Checking safe_cell v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "f7daf50b6ac5f11e7b91a42c01f2c8749f6b3c2ca3f65ffc29315a16d06c0cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7daf50b6ac5f11e7b91a42c01f2c8749f6b3c2ca3f65ffc29315a16d06c0cf9", kill_on_drop: false }`
[INFO] [stdout] f7daf50b6ac5f11e7b91a42c01f2c8749f6b3c2ca3f65ffc29315a16d06c0cf9