[INFO] cloning repository https://github.com/gsquire/concur
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gsquire/concur" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgsquire%2Fconcur", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgsquire%2Fconcur'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58fe13202e4473422f611a0623ba0ea1c5739743
[INFO] checking gsquire/concur against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgsquire%2Fconcur" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gsquire/concur on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gsquire/concur
[INFO] finished tweaking git repo https://github.com/gsquire/concur
[INFO] tweaked toml for git repo https://github.com/gsquire/concur written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gsquire/concur already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0139a5c74c28fbd1e8f0f62a30129d218e4a8c641f2f91ecf6d28c82ae6bb3cb
[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" "0139a5c74c28fbd1e8f0f62a30129d218e4a8c641f2f91ecf6d28c82ae6bb3cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0139a5c74c28fbd1e8f0f62a30129d218e4a8c641f2f91ecf6d28c82ae6bb3cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0139a5c74c28fbd1e8f0f62a30129d218e4a8c641f2f91ecf6d28c82ae6bb3cb", kill_on_drop: false }`
[INFO] [stdout] 0139a5c74c28fbd1e8f0f62a30129d218e4a8c641f2f91ecf6d28c82ae6bb3cb
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64df7b75765080fefdfa4a6f7adb30c2a52bede3d46c11aed9b4d2fde81d5b3e
[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" "64df7b75765080fefdfa4a6f7adb30c2a52bede3d46c11aed9b4d2fde81d5b3e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking docopt v0.7.0
[INFO] [stderr]     Checking concur v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]   --> src/main.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Clone, Debug, RustcDecodable)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]   --> src/main.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Clone, Debug, RustcDecodable)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.10s
[INFO] running `Command { std: "docker" "inspect" "64df7b75765080fefdfa4a6f7adb30c2a52bede3d46c11aed9b4d2fde81d5b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64df7b75765080fefdfa4a6f7adb30c2a52bede3d46c11aed9b4d2fde81d5b3e", kill_on_drop: false }`
[INFO] [stdout] 64df7b75765080fefdfa4a6f7adb30c2a52bede3d46c11aed9b4d2fde81d5b3e