[INFO] updating cached repository markhakansson/refresh-shell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/markhakansson/refresh-shell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/markhakansson/refresh-shell" "work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/markhakansson/refresh-shell" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/markhakansson/refresh-shell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/markhakansson/refresh-shell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e5cbd09b39bbd4f0f52324dfea4c21d3ddd3788
[INFO] sha for GitHub repo markhakansson/refresh-shell: 7e5cbd09b39bbd4f0f52324dfea4c21d3ddd3788
[INFO] validating manifest of markhakansson/refresh-shell 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 markhakansson/refresh-shell 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 markhakansson/refresh-shell
[INFO] finished frobbing markhakansson/refresh-shell
[INFO] frobbed toml for markhakansson/refresh-shell written to work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell/Cargo.toml
[INFO] started frobbing markhakansson/refresh-shell
[INFO] finished frobbing markhakansson/refresh-shell
[INFO] frobbed toml for markhakansson/refresh-shell written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/markhakansson/refresh-shell/Cargo.toml
[INFO] crate markhakansson/refresh-shell 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 markhakansson/refresh-shell against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a3f9fcc1ed58b66f16ee5516bf3b4911eb73afc238d24a83ae5aaca970da2177
[INFO] running `"docker" "start" "-a" "a3f9fcc1ed58b66f16ee5516bf3b4911eb73afc238d24a83ae5aaca970da2177"`
[INFO] [stderr]    Compiling refresh-shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |         io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:28
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Ok(mut child) => { child.wait(); },
[INFO] [stderr]    |                            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "a3f9fcc1ed58b66f16ee5516bf3b4911eb73afc238d24a83ae5aaca970da2177"`
[INFO] running `"docker" "rm" "-f" "a3f9fcc1ed58b66f16ee5516bf3b4911eb73afc238d24a83ae5aaca970da2177"`
[INFO] [stdout] a3f9fcc1ed58b66f16ee5516bf3b4911eb73afc238d24a83ae5aaca970da2177
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ca74338762fd21e64da31a2c7cf2a57b8778604d31b5babe8555639897c50297
[INFO] running `"docker" "start" "-a" "ca74338762fd21e64da31a2c7cf2a57b8778604d31b5babe8555639897c50297"`
[INFO] [stderr]    Compiling refresh-shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |         io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:28
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Ok(mut child) => { child.wait(); },
[INFO] [stderr]    |                            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "ca74338762fd21e64da31a2c7cf2a57b8778604d31b5babe8555639897c50297"`
[INFO] running `"docker" "rm" "-f" "ca74338762fd21e64da31a2c7cf2a57b8778604d31b5babe8555639897c50297"`
[INFO] [stdout] ca74338762fd21e64da31a2c7cf2a57b8778604d31b5babe8555639897c50297
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/markhakansson/refresh-shell:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 4bec8921b789965a70a53a0bbc46d3e35e4df36b99ee352bb2eb64ccaf93ae76
[INFO] running `"docker" "start" "-a" "4bec8921b789965a70a53a0bbc46d3e35e4df36b99ee352bb2eb64ccaf93ae76"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/refresh_shell-29347cb7a565334a
[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" "4bec8921b789965a70a53a0bbc46d3e35e4df36b99ee352bb2eb64ccaf93ae76"`
[INFO] running `"docker" "rm" "-f" "4bec8921b789965a70a53a0bbc46d3e35e4df36b99ee352bb2eb64ccaf93ae76"`
[INFO] [stdout] 4bec8921b789965a70a53a0bbc46d3e35e4df36b99ee352bb2eb64ccaf93ae76