[INFO] updating cached repository justinwoo/my-prompt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justinwoo/my-prompt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justinwoo/my-prompt" "work/ex/beta-1.38-1/sources/1.37.0/gh/justinwoo/my-prompt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/justinwoo/my-prompt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justinwoo/my-prompt" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justinwoo/my-prompt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justinwoo/my-prompt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 31fe91406eec9af103cecd8b99fb4a3c0feff65a
[INFO] sha for GitHub repo justinwoo/my-prompt: 31fe91406eec9af103cecd8b99fb4a3c0feff65a
[INFO] validating manifest of justinwoo/my-prompt 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 justinwoo/my-prompt 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 justinwoo/my-prompt
[INFO] finished frobbing justinwoo/my-prompt
[INFO] frobbed toml for justinwoo/my-prompt written to work/ex/beta-1.38-1/sources/1.37.0/gh/justinwoo/my-prompt/Cargo.toml
[INFO] started frobbing justinwoo/my-prompt
[INFO] finished frobbing justinwoo/my-prompt
[INFO] frobbed toml for justinwoo/my-prompt written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justinwoo/my-prompt/Cargo.toml
[INFO] crate justinwoo/my-prompt 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 justinwoo/my-prompt 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/justinwoo/my-prompt:/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] 5d8d3f822f2db8ab35212fc01b5c8112bbcdb51f7fb6da147b473519d9ab7ca0
[INFO] running `"docker" "start" "-a" "5d8d3f822f2db8ab35212fc01b5c8112bbcdb51f7fb6da147b473519d9ab7ca0"`
[INFO] [stderr]    Compiling termcolor v1.0.4 (https://github.com/justinwoo/termcolor?branch=non-printing-escape#eaf83d93)
[INFO] [stderr]    Compiling curl-sys v0.4.17
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling prompt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `repo`
[INFO] [stderr]   --> src/main.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |         Ok(repo) => println!("got repo"),
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_repo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `"docker" "inspect" "5d8d3f822f2db8ab35212fc01b5c8112bbcdb51f7fb6da147b473519d9ab7ca0"`
[INFO] running `"docker" "rm" "-f" "5d8d3f822f2db8ab35212fc01b5c8112bbcdb51f7fb6da147b473519d9ab7ca0"`
[INFO] [stdout] 5d8d3f822f2db8ab35212fc01b5c8112bbcdb51f7fb6da147b473519d9ab7ca0
[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/justinwoo/my-prompt:/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] 47f37e314fc563c6fe9c648aabcd7d12470abd2eb17d0c7c2fe662d3101a2aeb
[INFO] running `"docker" "start" "-a" "47f37e314fc563c6fe9c648aabcd7d12470abd2eb17d0c7c2fe662d3101a2aeb"`
[INFO] [stderr]    Compiling prompt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `repo`
[INFO] [stderr]   --> src/main.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |         Ok(repo) => println!("got repo"),
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_repo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "47f37e314fc563c6fe9c648aabcd7d12470abd2eb17d0c7c2fe662d3101a2aeb"`
[INFO] running `"docker" "rm" "-f" "47f37e314fc563c6fe9c648aabcd7d12470abd2eb17d0c7c2fe662d3101a2aeb"`
[INFO] [stdout] 47f37e314fc563c6fe9c648aabcd7d12470abd2eb17d0c7c2fe662d3101a2aeb
[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/justinwoo/my-prompt:/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] feae3163d352c77f9057bab8aba0d3e96a85134d5079fe4a2748ffea1d8fd43c
[INFO] running `"docker" "start" "-a" "feae3163d352c77f9057bab8aba0d3e96a85134d5079fe4a2748ffea1d8fd43c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/prompt-34fd0be18788b1fe
[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" "feae3163d352c77f9057bab8aba0d3e96a85134d5079fe4a2748ffea1d8fd43c"`
[INFO] running `"docker" "rm" "-f" "feae3163d352c77f9057bab8aba0d3e96a85134d5079fe4a2748ffea1d8fd43c"`
[INFO] [stdout] feae3163d352c77f9057bab8aba0d3e96a85134d5079fe4a2748ffea1d8fd43c