[INFO] cloning repository https://github.com/lirawx/rust-learning-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lirawx/rust-learning-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flirawx%2Frust-learning-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flirawx%2Frust-learning-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1ae2938b3ce09ae228d835c2221cd1b2d995997
[INFO] checking lirawx/rust-learning-tutorial against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flirawx%2Frust-learning-tutorial" "/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/lirawx/rust-learning-tutorial on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lirawx/rust-learning-tutorial
[INFO] finished tweaking git repo https://github.com/lirawx/rust-learning-tutorial
[INFO] tweaked toml for git repo https://github.com/lirawx/rust-learning-tutorial written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lirawx/rust-learning-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates v1.0.5
[INFO] [stderr]   Downloaded syn v1.0.55
[INFO] [stderr]   Downloaded exitfailure v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8e207a3a337b4d3b3a7cdfe1d8abb8a8fef610a84b226c5d4eb87b1ab2b634a
[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" "e8e207a3a337b4d3b3a7cdfe1d8abb8a8fef610a84b226c5d4eb87b1ab2b634a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8e207a3a337b4d3b3a7cdfe1d8abb8a8fef610a84b226c5d4eb87b1ab2b634a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8e207a3a337b4d3b3a7cdfe1d8abb8a8fef610a84b226c5d4eb87b1ab2b634a", kill_on_drop: false }`
[INFO] [stdout] e8e207a3a337b4d3b3a7cdfe1d8abb8a8fef610a84b226c5d4eb87b1ab2b634a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-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" "RUSTUP_TOOLCHAIN=4a04890980766cc79878135f5ade8c0c4321e943" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b22982610968665ac7ba001248a820391234623bb81546e5bfc2d435b5c963
[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" "70b22982610968665ac7ba001248a820391234623bb81546e5bfc2d435b5c963", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking another_grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking assert_cmd v0.10.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "70b22982610968665ac7ba001248a820391234623bb81546e5bfc2d435b5c963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b22982610968665ac7ba001248a820391234623bb81546e5bfc2d435b5c963", kill_on_drop: false }`
[INFO] [stdout] 70b22982610968665ac7ba001248a820391234623bb81546e5bfc2d435b5c963