[INFO] fetching crate flatten_dir 0.1.0...
[INFO] checking flatten_dir-0.1.0 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] extracting crate flatten_dir 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate flatten_dir 0.1.0 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 flatten_dir 0.1.0
[INFO] finished tweaking crates.io crate flatten_dir 0.1.0
[INFO] tweaked toml for crates.io crate flatten_dir 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate flatten_dir 0.1.0 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6639e310733d7ff772de6dbf5b843dfa24cd1de6bd3542dbab3cd2db8f53651f
[INFO] running `Command { std: "docker" "start" "-a" "6639e310733d7ff772de6dbf5b843dfa24cd1de6bd3542dbab3cd2db8f53651f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6639e310733d7ff772de6dbf5b843dfa24cd1de6bd3542dbab3cd2db8f53651f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6639e310733d7ff772de6dbf5b843dfa24cd1de6bd3542dbab3cd2db8f53651f", kill_on_drop: false }`
[INFO] [stdout] 6639e310733d7ff772de6dbf5b843dfa24cd1de6bd3542dbab3cd2db8f53651f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] a7cb8351638c3b3fd263f5d1e1a2399358ef1e04a5b77a85d3b62b60012fa3bf
[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" "a7cb8351638c3b3fd263f5d1e1a2399358ef1e04a5b77a85d3b62b60012fa3bf", kill_on_drop: false }`
[INFO] [stderr]     Checking flatten_dir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "a7cb8351638c3b3fd263f5d1e1a2399358ef1e04a5b77a85d3b62b60012fa3bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7cb8351638c3b3fd263f5d1e1a2399358ef1e04a5b77a85d3b62b60012fa3bf", kill_on_drop: false }`
[INFO] [stdout] a7cb8351638c3b3fd263f5d1e1a2399358ef1e04a5b77a85d3b62b60012fa3bf