[INFO] cloning repository https://github.com/japaric/xargo
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/japaric/xargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaparic%2Fxargo"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaparic%2Fxargo'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 14141603edd46920c24d0713f1f082c2acac8fda
[INFO] checking japaric/xargo against try#1a399c10897767c36d147199696c96f193034e49 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaparic%2Fxargo" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/japaric/xargo on toolchain 1a399c10897767c36d147199696c96f193034e49
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/japaric/xargo
[INFO] finished tweaking git repo https://github.com/japaric/xargo
[INFO] tweaked toml for git repo https://github.com/japaric/xargo written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/japaric/xargo already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "/opt/rustwide/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 50b01c98837be7c5c6a1dd7954286fd92837d33d654e190ec60aa1fe31d1a27f
[INFO] running `"docker" "start" "-a" "50b01c98837be7c5c6a1dd7954286fd92837d33d654e190ec60aa1fe31d1a27f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling xargo v0.3.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking rustc_version v0.1.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking error-chain v0.7.2
[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 13.23s
[INFO] running `"docker" "inspect" "50b01c98837be7c5c6a1dd7954286fd92837d33d654e190ec60aa1fe31d1a27f"`
[INFO] running `"docker" "rm" "-f" "50b01c98837be7c5c6a1dd7954286fd92837d33d654e190ec60aa1fe31d1a27f"`
[INFO] [stdout] 50b01c98837be7c5c6a1dd7954286fd92837d33d654e190ec60aa1fe31d1a27f