[INFO] fetching crate mutexpect 0.2.3...
[INFO] checking mutexpect-0.2.3 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate mutexpect 0.2.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mutexpect 0.2.3 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mutexpect 0.2.3
[INFO] finished tweaking crates.io crate mutexpect 0.2.3
[INFO] tweaked toml for crates.io crate mutexpect 0.2.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tabfile v0.2.1
[INFO] [stderr]   Downloaded pattern_partition_prediction v0.1.1
[INFO] [stderr]   Downloaded twobit v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae5c64b0d033edff23a5b04e1d51060a2d5317cc8e883dbd382f97cfa19733cb
[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" "ae5c64b0d033edff23a5b04e1d51060a2d5317cc8e883dbd382f97cfa19733cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae5c64b0d033edff23a5b04e1d51060a2d5317cc8e883dbd382f97cfa19733cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae5c64b0d033edff23a5b04e1d51060a2d5317cc8e883dbd382f97cfa19733cb", kill_on_drop: false }`
[INFO] [stdout] ae5c64b0d033edff23a5b04e1d51060a2d5317cc8e883dbd382f97cfa19733cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9366657f5e63fc554fe1c627c0c28a0dcd36096c48d5082cc066d0d110dc17a7
[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" "9366657f5e63fc554fe1c627c0c28a0dcd36096c48d5082cc066d0d110dc17a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking tabfile v0.2.1
[INFO] [stderr]     Checking twobit v0.1.1
[INFO] [stderr]     Checking pattern_partition_prediction v0.1.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking mutexpect v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.04s
[INFO] running `Command { std: "docker" "inspect" "9366657f5e63fc554fe1c627c0c28a0dcd36096c48d5082cc066d0d110dc17a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9366657f5e63fc554fe1c627c0c28a0dcd36096c48d5082cc066d0d110dc17a7", kill_on_drop: false }`
[INFO] [stdout] 9366657f5e63fc554fe1c627c0c28a0dcd36096c48d5082cc066d0d110dc17a7