[INFO] fetching crate ace 0.2.0...
[INFO] checking ace-0.2.0 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] extracting crate ace 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ace 0.2.0 on toolchain 1c5262aa6c045a581fb974488793f09ed51fc498
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ace 0.2.0
[INFO] finished tweaking crates.io crate ace 0.2.0
[INFO] tweaked toml for crates.io crate ace 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate ace 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2971c40069da2d4793331fc631fe7543d25d0ff575f5048e3ac4ac346b22604
[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" "d2971c40069da2d4793331fc631fe7543d25d0ff575f5048e3ac4ac346b22604", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2971c40069da2d4793331fc631fe7543d25d0ff575f5048e3ac4ac346b22604", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2971c40069da2d4793331fc631fe7543d25d0ff575f5048e3ac4ac346b22604", kill_on_drop: false }`
[INFO] [stdout] d2971c40069da2d4793331fc631fe7543d25d0ff575f5048e3ac4ac346b22604
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e3a76b7d77b04e7ed4595b8887622cb68b02a0a2be698c6b417efb4e90d019cb
[INFO] running `Command { std: "docker" "start" "-a" "e3a76b7d77b04e7ed4595b8887622cb68b02a0a2be698c6b417efb4e90d019cb", kill_on_drop: false }`
[INFO] [stderr]     Checking ace v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "e3a76b7d77b04e7ed4595b8887622cb68b02a0a2be698c6b417efb4e90d019cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a76b7d77b04e7ed4595b8887622cb68b02a0a2be698c6b417efb4e90d019cb", kill_on_drop: false }`
[INFO] [stdout] e3a76b7d77b04e7ed4595b8887622cb68b02a0a2be698c6b417efb4e90d019cb