[INFO] cloning repository https://github.com/scrabsha/concord
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scrabsha/concord" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscrabsha%2Fconcord", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscrabsha%2Fconcord'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f386d8531f2bd57cdfea5400fcb1fbaa75b522b0
[INFO] checking scrabsha/concord against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscrabsha%2Fconcord" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scrabsha/concord on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scrabsha/concord
[INFO] finished tweaking git repo https://github.com/scrabsha/concord
[INFO] tweaked toml for git repo https://github.com/scrabsha/concord written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/scrabsha/concord already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8209ab31f3663890bb3db88cc6664df0cd29d2964079c24602b99af014030a02
[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" "8209ab31f3663890bb3db88cc6664df0cd29d2964079c24602b99af014030a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8209ab31f3663890bb3db88cc6664df0cd29d2964079c24602b99af014030a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8209ab31f3663890bb3db88cc6664df0cd29d2964079c24602b99af014030a02", kill_on_drop: false }`
[INFO] [stdout] 8209ab31f3663890bb3db88cc6664df0cd29d2964079c24602b99af014030a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] cda2746063420824809032316fc1b882922bd380202cd5fea0354e8eba63d4ab
[INFO] running `Command { std: "docker" "start" "-a" "cda2746063420824809032316fc1b882922bd380202cd5fea0354e8eba63d4ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling serde_json v1.0.63
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking seahorse v1.1.1
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking config v0.10.1
[INFO] [stderr]     Checking concord v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.63s
[INFO] running `Command { std: "docker" "inspect" "cda2746063420824809032316fc1b882922bd380202cd5fea0354e8eba63d4ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cda2746063420824809032316fc1b882922bd380202cd5fea0354e8eba63d4ab", kill_on_drop: false }`
[INFO] [stdout] cda2746063420824809032316fc1b882922bd380202cd5fea0354e8eba63d4ab