[INFO] fetching crate xargo 0.3.21...
[INFO] checking xargo-0.3.21 against try#5fdfba63a96c5e8ae0ebf6b8b66853110277087d for pr-73166
[INFO] extracting crate xargo 0.3.21 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate xargo 0.3.21 on toolchain 5fdfba63a96c5e8ae0ebf6b8b66853110277087d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xargo 0.3.21
[INFO] finished tweaking crates.io crate xargo 0.3.21
[INFO] tweaked toml for crates.io crate xargo 0.3.21 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate xargo 0.3.21 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "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] 498091d3adcf8c7a965c123a9af72edb7de8bddc4161f855678373016f203d82
[INFO] running `Command { std: "docker" "start" "-a" "498091d3adcf8c7a965c123a9af72edb7de8bddc4161f855678373016f203d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "498091d3adcf8c7a965c123a9af72edb7de8bddc4161f855678373016f203d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "498091d3adcf8c7a965c123a9af72edb7de8bddc4161f855678373016f203d82", kill_on_drop: false }`
[INFO] [stdout] 498091d3adcf8c7a965c123a9af72edb7de8bddc4161f855678373016f203d82
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26a23b328ae505460e283356326ef2183306c909bd64eaaf9eec742822502f13
[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" "26a23b328ae505460e283356326ef2183306c909bd64eaaf9eec742822502f13", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling xargo v0.3.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]     Checking rustc_version v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking error-chain v0.7.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.3.8
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.59s
[INFO] running `Command { std: "docker" "inspect" "26a23b328ae505460e283356326ef2183306c909bd64eaaf9eec742822502f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a23b328ae505460e283356326ef2183306c909bd64eaaf9eec742822502f13", kill_on_drop: false }`
[INFO] [stdout] 26a23b328ae505460e283356326ef2183306c909bd64eaaf9eec742822502f13