[INFO] cloning repository https://github.com/matt-sellick/substring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matt-sellick/substring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-sellick%2Fsubstring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-sellick%2Fsubstring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e0328a366e16658cacea43aaf1abe7950195e4c
[INFO] checking matt-sellick/substring against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-sellick%2Fsubstring" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matt-sellick/substring 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/matt-sellick/substring
[INFO] finished tweaking git repo https://github.com/matt-sellick/substring
[INFO] tweaked toml for git repo https://github.com/matt-sellick/substring written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/matt-sellick/substring 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] caf08347bbf93a1b53633592e938a6fbcc4a9f6e5a7ab95360e14e7e4b1188a1
[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" "caf08347bbf93a1b53633592e938a6fbcc4a9f6e5a7ab95360e14e7e4b1188a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf08347bbf93a1b53633592e938a6fbcc4a9f6e5a7ab95360e14e7e4b1188a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf08347bbf93a1b53633592e938a6fbcc4a9f6e5a7ab95360e14e7e4b1188a1", kill_on_drop: false }`
[INFO] [stdout] caf08347bbf93a1b53633592e938a6fbcc4a9f6e5a7ab95360e14e7e4b1188a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2203edba4c98a147092a3a4c753b4a6534ded2a5fc06d5ffce6c9df0d1e022f3
[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" "2203edba4c98a147092a3a4c753b4a6534ded2a5fc06d5ffce6c9df0d1e022f3", kill_on_drop: false }`
[INFO] [stderr]     Checking substring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "2203edba4c98a147092a3a4c753b4a6534ded2a5fc06d5ffce6c9df0d1e022f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2203edba4c98a147092a3a4c753b4a6534ded2a5fc06d5ffce6c9df0d1e022f3", kill_on_drop: false }`
[INFO] [stdout] 2203edba4c98a147092a3a4c753b4a6534ded2a5fc06d5ffce6c9df0d1e022f3