[INFO] updating cached repository corndog/pe11_20
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/corndog/pe11_20
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/corndog/pe11_20" "work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/corndog/pe11_20" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corndog/pe11_20"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corndog/pe11_20'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4171255bdb0b927a544c9c82eb0b0a9db5e509d2
[INFO] sha for GitHub repo corndog/pe11_20: 4171255bdb0b927a544c9c82eb0b0a9db5e509d2
[INFO] validating manifest of corndog/pe11_20 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 corndog/pe11_20 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 corndog/pe11_20
[INFO] finished frobbing corndog/pe11_20
[INFO] frobbed toml for corndog/pe11_20 written to work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20/Cargo.toml
[INFO] started frobbing corndog/pe11_20
[INFO] finished frobbing corndog/pe11_20
[INFO] frobbed toml for corndog/pe11_20 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/corndog/pe11_20/Cargo.toml
[INFO] crate corndog/pe11_20 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 corndog/pe11_20 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20:/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] 89cdbf1b1c26df2b2709f02ef560dbc1124dbbb606a759beb8a3f4fba51da707
[INFO] running `"docker" "start" "-a" "89cdbf1b1c26df2b2709f02ef560dbc1124dbbb606a759beb8a3f4fba51da707"`
[INFO] [stderr]    Compiling stopwatch v0.0.7
[INFO] [stderr]    Compiling pe2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `sw`
[INFO] [stderr]    --> src/main.rs:358:9
[INFO] [stderr]     |
[INFO] [stderr] 358 |     let sw = Stopwatch::start_new();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_sw`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `"docker" "inspect" "89cdbf1b1c26df2b2709f02ef560dbc1124dbbb606a759beb8a3f4fba51da707"`
[INFO] running `"docker" "rm" "-f" "89cdbf1b1c26df2b2709f02ef560dbc1124dbbb606a759beb8a3f4fba51da707"`
[INFO] [stdout] 89cdbf1b1c26df2b2709f02ef560dbc1124dbbb606a759beb8a3f4fba51da707
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20:/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] 9656309389cb1354b3f31c307e1fc2dfef750d85432383738060a226d2d9eb18
[INFO] running `"docker" "start" "-a" "9656309389cb1354b3f31c307e1fc2dfef750d85432383738060a226d2d9eb18"`
[INFO] [stderr]    Compiling pe2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `sw`
[INFO] [stderr]    --> src/main.rs:358:9
[INFO] [stderr]     |
[INFO] [stderr] 358 |     let sw = Stopwatch::start_new();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_sw`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "9656309389cb1354b3f31c307e1fc2dfef750d85432383738060a226d2d9eb18"`
[INFO] running `"docker" "rm" "-f" "9656309389cb1354b3f31c307e1fc2dfef750d85432383738060a226d2d9eb18"`
[INFO] [stdout] 9656309389cb1354b3f31c307e1fc2dfef750d85432383738060a226d2d9eb18
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/corndog/pe11_20:/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] d1e28bfbd600be04898100403d2716763ce4c7989d9e8a90202d9bfc4eebe831
[INFO] running `"docker" "start" "-a" "d1e28bfbd600be04898100403d2716763ce4c7989d9e8a90202d9bfc4eebe831"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pe2-9fa8c9fb2aa85559
[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" "d1e28bfbd600be04898100403d2716763ce4c7989d9e8a90202d9bfc4eebe831"`
[INFO] running `"docker" "rm" "-f" "d1e28bfbd600be04898100403d2716763ce4c7989d9e8a90202d9bfc4eebe831"`
[INFO] [stdout] d1e28bfbd600be04898100403d2716763ce4c7989d9e8a90202d9bfc4eebe831