[INFO] updating cached repository An-Tu/rust-template-creator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/An-Tu/rust-template-creator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/An-Tu/rust-template-creator" "work/ex/beta-1.38-1/sources/1.37.0/gh/An-Tu/rust-template-creator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/An-Tu/rust-template-creator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/An-Tu/rust-template-creator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e66be8bfb3607be658fcf362676d7c75351a8674
[INFO] sha for GitHub repo An-Tu/rust-template-creator: e66be8bfb3607be658fcf362676d7c75351a8674
[INFO] validating manifest of An-Tu/rust-template-creator on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of An-Tu/rust-template-creator on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing An-Tu/rust-template-creator
[INFO] finished frobbing An-Tu/rust-template-creator
[INFO] frobbed toml for An-Tu/rust-template-creator written to work/ex/beta-1.38-1/sources/1.37.0/gh/An-Tu/rust-template-creator/Cargo.toml
[INFO] started frobbing An-Tu/rust-template-creator
[INFO] finished frobbing An-Tu/rust-template-creator
[INFO] frobbed toml for An-Tu/rust-template-creator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator/Cargo.toml
[INFO] crate An-Tu/rust-template-creator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing An-Tu/rust-template-creator against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 4093d387fbc90d2db7f34da0f6416278e5a287d16325b1c5dce205fb1402a066
[INFO] running `"docker" "start" "-a" "4093d387fbc90d2db7f34da0f6416278e5a287d16325b1c5dce205fb1402a066"`
[INFO] [stderr]    Compiling template_creator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `read_file`
[INFO] [stderr]  --> src/fs_helpers.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn read_file<P: AsRef<Path>>(path_to_file: P) -> Result<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 1.09s
[INFO] running `"docker" "inspect" "4093d387fbc90d2db7f34da0f6416278e5a287d16325b1c5dce205fb1402a066"`
[INFO] running `"docker" "rm" "-f" "4093d387fbc90d2db7f34da0f6416278e5a287d16325b1c5dce205fb1402a066"`
[INFO] [stdout] 4093d387fbc90d2db7f34da0f6416278e5a287d16325b1c5dce205fb1402a066
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 94d0eb9b19052894947c4953c96b78f2c35bc3d230420d6e7a61f7aeb83379cd
[INFO] running `"docker" "start" "-a" "94d0eb9b19052894947c4953c96b78f2c35bc3d230420d6e7a61f7aeb83379cd"`
[INFO] [stderr]    Compiling template_creator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `read_file`
[INFO] [stderr]  --> src/fs_helpers.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn read_file<P: AsRef<Path>>(path_to_file: P) -> Result<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 0.59s
[INFO] running `"docker" "inspect" "94d0eb9b19052894947c4953c96b78f2c35bc3d230420d6e7a61f7aeb83379cd"`
[INFO] running `"docker" "rm" "-f" "94d0eb9b19052894947c4953c96b78f2c35bc3d230420d6e7a61f7aeb83379cd"`
[INFO] [stdout] 94d0eb9b19052894947c4953c96b78f2c35bc3d230420d6e7a61f7aeb83379cd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/An-Tu/rust-template-creator:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3dbde34df876d7a33606c9917bc851915acf12555ded6fce18c39cd07a978ade
[INFO] running `"docker" "start" "-a" "3dbde34df876d7a33606c9917bc851915acf12555ded6fce18c39cd07a978ade"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/template_creator-95931c5b8c52d218
[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" "3dbde34df876d7a33606c9917bc851915acf12555ded6fce18c39cd07a978ade"`
[INFO] running `"docker" "rm" "-f" "3dbde34df876d7a33606c9917bc851915acf12555ded6fce18c39cd07a978ade"`
[INFO] [stdout] 3dbde34df876d7a33606c9917bc851915acf12555ded6fce18c39cd07a978ade