[INFO] cloning repository c4collins/rust-by-example
[INFO] running `"git" "clone" "--bare" "git://github.com/c4collins/rust-by-example.git" "work/cache/sources/gh/c4collins/rust-by-example"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/c4collins/rust-by-example'...
[INFO] running `"git" "clone" "work/cache/sources/gh/c4collins/rust-by-example" "work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/c4collins/rust-by-example" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c4collins/rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c4collins/rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93b426269e08f327892d00efd64e58e3c817f3d5
[INFO] sha for GitHub repo c4collins/rust-by-example: 93b426269e08f327892d00efd64e58e3c817f3d5
[INFO] validating manifest of c4collins/rust-by-example on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of c4collins/rust-by-example on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing c4collins/rust-by-example
[INFO] finished frobbing c4collins/rust-by-example
[INFO] frobbed toml for c4collins/rust-by-example written to work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example/Cargo.toml
[INFO] started frobbing c4collins/rust-by-example
[INFO] finished frobbing c4collins/rust-by-example
[INFO] frobbed toml for c4collins/rust-by-example written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/c4collins/rust-by-example/Cargo.toml
[INFO] crate c4collins/rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing c4collins/rust-by-example against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4c7810fdce376a2e52fb0d03f7d3ef94c3bb4fdb13de5b65ea4221d2a16d6df1
[INFO] running `"docker" "start" "-a" "4c7810fdce376a2e52fb0d03f7d3ef94c3bb4fdb13de5b65ea4221d2a16d6df1"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling typename_derive v0.1.3
[INFO] [stderr]    Compiling typename v0.1.1
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `section_subtitle`
[INFO] [stderr]   --> src/helpers.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn section_subtitle (title: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.43s
[INFO] running `"docker" "inspect" "4c7810fdce376a2e52fb0d03f7d3ef94c3bb4fdb13de5b65ea4221d2a16d6df1"`
[INFO] running `"docker" "rm" "-f" "4c7810fdce376a2e52fb0d03f7d3ef94c3bb4fdb13de5b65ea4221d2a16d6df1"`
[INFO] [stdout] 4c7810fdce376a2e52fb0d03f7d3ef94c3bb4fdb13de5b65ea4221d2a16d6df1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c5793d75bcd489e4ad0f7238691c34ef76986ae8a868c3eb336753535b5999e9
[INFO] running `"docker" "start" "-a" "c5793d75bcd489e4ad0f7238691c34ef76986ae8a868c3eb336753535b5999e9"`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `section_subtitle`
[INFO] [stderr]   --> src/helpers.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn section_subtitle (title: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `"docker" "inspect" "c5793d75bcd489e4ad0f7238691c34ef76986ae8a868c3eb336753535b5999e9"`
[INFO] running `"docker" "rm" "-f" "c5793d75bcd489e4ad0f7238691c34ef76986ae8a868c3eb336753535b5999e9"`
[INFO] [stdout] c5793d75bcd489e4ad0f7238691c34ef76986ae8a868c3eb336753535b5999e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/c4collins/rust-by-example:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 6533b401b689933dcc4b0cf8bf9dd05d2cab54de6807f738aa4c1a994ff3cb85
[INFO] running `"docker" "start" "-a" "6533b401b689933dcc4b0cf8bf9dd05d2cab54de6807f738aa4c1a994ff3cb85"`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rary-5a5362df2acd337f
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_by_example-2fd9635be7c6cc6f
[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] [stderr]    Doc-tests rary
[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" "6533b401b689933dcc4b0cf8bf9dd05d2cab54de6807f738aa4c1a994ff3cb85"`
[INFO] running `"docker" "rm" "-f" "6533b401b689933dcc4b0cf8bf9dd05d2cab54de6807f738aa4c1a994ff3cb85"`
[INFO] [stdout] 6533b401b689933dcc4b0cf8bf9dd05d2cab54de6807f738aa4c1a994ff3cb85