[INFO] updating cached repository https://github.com/benlakey/rust_learning
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6878622cfceb3cc4f58628987a92c70a06b5b88e
[INFO] testing benlakey/rust_learning against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenlakey%2Frust_learning" "work/builds/worker-9/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benlakey/rust_learning on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/benlakey/rust_learning
[INFO] finished tweaking git repo https://github.com/benlakey/rust_learning
[INFO] tweaked toml for git repo https://github.com/benlakey/rust_learning written to work/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/benlakey/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] aea4ac474a564e90c8df3ed044e96c634a3523ce8be5a16061c267c91d1366ea
[INFO] running `"docker" "start" "-a" "aea4ac474a564e90c8df3ed044e96c634a3523ce8be5a16061c267c91d1366ea"`
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: enum is never used: `Foo`
[INFO] [stderr]    --> src/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     enum Foo {
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "aea4ac474a564e90c8df3ed044e96c634a3523ce8be5a16061c267c91d1366ea"`
[INFO] running `"docker" "rm" "-f" "aea4ac474a564e90c8df3ed044e96c634a3523ce8be5a16061c267c91d1366ea"`
[INFO] [stdout] aea4ac474a564e90c8df3ed044e96c634a3523ce8be5a16061c267c91d1366ea
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] edb1b75610fce91f7ffb1b23bcdcc4d19d7480e0dcb40801523fe6ab5c37b18a
[INFO] running `"docker" "start" "-a" "edb1b75610fce91f7ffb1b23bcdcc4d19d7480e0dcb40801523fe6ab5c37b18a"`
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: enum is never used: `Foo`
[INFO] [stderr]    --> src/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     enum Foo {
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `"docker" "inspect" "edb1b75610fce91f7ffb1b23bcdcc4d19d7480e0dcb40801523fe6ab5c37b18a"`
[INFO] running `"docker" "rm" "-f" "edb1b75610fce91f7ffb1b23bcdcc4d19d7480e0dcb40801523fe6ab5c37b18a"`
[INFO] [stdout] edb1b75610fce91f7ffb1b23bcdcc4d19d7480e0dcb40801523fe6ab5c37b18a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 08f8c22f8f9cdecf93b78167acd6d4b0da8f34c38800effd2a74407d2ad8d39c
[INFO] running `"docker" "start" "-a" "08f8c22f8f9cdecf93b78167acd6d4b0da8f34c38800effd2a74407d2ad8d39c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hello_world-732531b8cdbc8756
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "08f8c22f8f9cdecf93b78167acd6d4b0da8f34c38800effd2a74407d2ad8d39c"`
[INFO] running `"docker" "rm" "-f" "08f8c22f8f9cdecf93b78167acd6d4b0da8f34c38800effd2a74407d2ad8d39c"`
[INFO] [stdout] 08f8c22f8f9cdecf93b78167acd6d4b0da8f34c38800effd2a74407d2ad8d39c