[INFO] cloning repository https://github.com/matthiaskrgr/gitgc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthiaskrgr/gitgc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fgitgc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fgitgc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8ef1b7ba01cec29039157ef7f26b026ee247c36
[INFO] checking matthiaskrgr/gitgc against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fgitgc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthiaskrgr/gitgc on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matthiaskrgr/gitgc
[INFO] finished tweaking git repo https://github.com/matthiaskrgr/gitgc
[INFO] tweaked toml for git repo https://github.com/matthiaskrgr/gitgc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/matthiaskrgr/gitgc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fab44b8eb6fe0c80143a59edf60610b377873d977d0cab4e4fedfef45dd000cf
[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" "fab44b8eb6fe0c80143a59edf60610b377873d977d0cab4e4fedfef45dd000cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fab44b8eb6fe0c80143a59edf60610b377873d977d0cab4e4fedfef45dd000cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab44b8eb6fe0c80143a59edf60610b377873d977d0cab4e4fedfef45dd000cf", kill_on_drop: false }`
[INFO] [stdout] fab44b8eb6fe0c80143a59edf60610b377873d977d0cab4e4fedfef45dd000cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3a59a462faad9dcb9497293467549bdffa52ecfb9ee6450b29a5f43b6e41c8f
[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" "b3a59a462faad9dcb9497293467549bdffa52ecfb9ee6450b29a5f43b6e41c8f", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking same-file v1.0.3
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking walkdir v2.2.5
[INFO] [stderr]    Compiling cmake v0.1.33
[INFO] [stderr]    Compiling libz-sys v1.0.20
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling curl-sys v0.4.8
[INFO] [stderr]    Compiling libssh2-sys v0.2.10
[INFO] [stderr]    Compiling libgit2-sys v0.7.7
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking git2 v0.7.5
[INFO] [stderr]     Checking gitgc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `tool_lints` has been stable since 1.31.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(tool_lints)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `tool_lints` has been stable since 1.31.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(tool_lints)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 21s
[INFO] running `Command { std: "docker" "inspect" "b3a59a462faad9dcb9497293467549bdffa52ecfb9ee6450b29a5f43b6e41c8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a59a462faad9dcb9497293467549bdffa52ecfb9ee6450b29a5f43b6e41c8f", kill_on_drop: false }`
[INFO] [stdout] b3a59a462faad9dcb9497293467549bdffa52ecfb9ee6450b29a5f43b6e41c8f