[INFO] cloning repository https://github.com/japaric/xargo
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaparic%2Fxargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35d02768e8320d13518b03ab15b6a07231247cd6
[INFO] checking japaric/xargo against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaparic%2Fxargo" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/japaric/xargo on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/japaric/xargo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88464b6d67ac6b5eece017ab14253fd3b8166c9cb45aa17b7b023b7adca826f2
[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" "88464b6d67ac6b5eece017ab14253fd3b8166c9cb45aa17b7b023b7adca826f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88464b6d67ac6b5eece017ab14253fd3b8166c9cb45aa17b7b023b7adca826f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88464b6d67ac6b5eece017ab14253fd3b8166c9cb45aa17b7b023b7adca826f2", kill_on_drop: false }`
[INFO] [stdout] 88464b6d67ac6b5eece017ab14253fd3b8166c9cb45aa17b7b023b7adca826f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58fa9032ea682da0d95e557f3d045d41092a39af6dafd18d6967bde2b7a66a94
[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" "58fa9032ea682da0d95e557f3d045d41092a39af6dafd18d6967bde2b7a66a94", kill_on_drop: false }`
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling xargo v0.3.22 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.38s
[INFO] running `Command { std: "docker" "inspect" "58fa9032ea682da0d95e557f3d045d41092a39af6dafd18d6967bde2b7a66a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58fa9032ea682da0d95e557f3d045d41092a39af6dafd18d6967bde2b7a66a94", kill_on_drop: false }`
[INFO] [stdout] 58fa9032ea682da0d95e557f3d045d41092a39af6dafd18d6967bde2b7a66a94