[INFO] updating cached repository StuartHa/binary_tree_printer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/StuartHa/binary_tree_printer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/StuartHa/binary_tree_printer" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/StuartHa/binary_tree_printer" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/StuartHa/binary_tree_printer"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/StuartHa/binary_tree_printer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 29f9b8dba13b0387919fa3aea846ceea7294d106
[INFO] sha for GitHub repo StuartHa/binary_tree_printer: 29f9b8dba13b0387919fa3aea846ceea7294d106
[INFO] validating manifest of StuartHa/binary_tree_printer on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of StuartHa/binary_tree_printer on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing StuartHa/binary_tree_printer
[INFO] finished frobbing StuartHa/binary_tree_printer
[INFO] frobbed toml for StuartHa/binary_tree_printer written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer/Cargo.toml
[INFO] started frobbing StuartHa/binary_tree_printer
[INFO] finished frobbing StuartHa/binary_tree_printer
[INFO] frobbed toml for StuartHa/binary_tree_printer written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/StuartHa/binary_tree_printer/Cargo.toml
[INFO] crate StuartHa/binary_tree_printer has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing StuartHa/binary_tree_printer against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] fcbaca1829545ecdf3fd6f6e57e231b00db7f07d7f9c17869f7b667997a01e03
[INFO] running `"docker" "start" "-a" "fcbaca1829545ecdf3fd6f6e57e231b00db7f07d7f9c17869f7b667997a01e03"`
[INFO] [stderr]    Compiling binary_tree_visualizer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `"docker" "inspect" "fcbaca1829545ecdf3fd6f6e57e231b00db7f07d7f9c17869f7b667997a01e03"`
[INFO] running `"docker" "rm" "-f" "fcbaca1829545ecdf3fd6f6e57e231b00db7f07d7f9c17869f7b667997a01e03"`
[INFO] [stdout] fcbaca1829545ecdf3fd6f6e57e231b00db7f07d7f9c17869f7b667997a01e03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3c3da39cbfef6eb96a559f99d131f5a186de4a886b580b368b7e1a398a19633d
[INFO] running `"docker" "start" "-a" "3c3da39cbfef6eb96a559f99d131f5a186de4a886b580b368b7e1a398a19633d"`
[INFO] [stderr]    Compiling binary_tree_visualizer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "3c3da39cbfef6eb96a559f99d131f5a186de4a886b580b368b7e1a398a19633d"`
[INFO] running `"docker" "rm" "-f" "3c3da39cbfef6eb96a559f99d131f5a186de4a886b580b368b7e1a398a19633d"`
[INFO] [stdout] 3c3da39cbfef6eb96a559f99d131f5a186de4a886b580b368b7e1a398a19633d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/StuartHa/binary_tree_printer:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 62f0c9cabb49ac2d7eafaf395772cefa169101d90c4dcdfcd3bb7daf03cafa2e
[INFO] running `"docker" "start" "-a" "62f0c9cabb49ac2d7eafaf395772cefa169101d90c4dcdfcd3bb7daf03cafa2e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/binary_tree_visualizer-8ca391920c5ef512
[INFO] [stderr]      Running /opt/crater/target/debug/deps/binary_tree_visualizer-c051631f2acd2a02
[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] [stdout] 
[INFO] [stderr]    Doc-tests binary_tree_visualizer
[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] [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" "62f0c9cabb49ac2d7eafaf395772cefa169101d90c4dcdfcd3bb7daf03cafa2e"`
[INFO] running `"docker" "rm" "-f" "62f0c9cabb49ac2d7eafaf395772cefa169101d90c4dcdfcd3bb7daf03cafa2e"`
[INFO] [stdout] 62f0c9cabb49ac2d7eafaf395772cefa169101d90c4dcdfcd3bb7daf03cafa2e