[INFO] updating cached repository chr4/writing_an_interpreter_in_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chr4/writing_an_interpreter_in_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chr4/writing_an_interpreter_in_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/chr4/writing_an_interpreter_in_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/chr4/writing_an_interpreter_in_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chr4/writing_an_interpreter_in_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chr4/writing_an_interpreter_in_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chr4/writing_an_interpreter_in_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b93e351e7ad6b51c78fbb8ce8d2952eb4281810a
[INFO] sha for GitHub repo chr4/writing_an_interpreter_in_rust: b93e351e7ad6b51c78fbb8ce8d2952eb4281810a
[INFO] validating manifest of chr4/writing_an_interpreter_in_rust 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 chr4/writing_an_interpreter_in_rust 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 chr4/writing_an_interpreter_in_rust
[INFO] finished frobbing chr4/writing_an_interpreter_in_rust
[INFO] frobbed toml for chr4/writing_an_interpreter_in_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/chr4/writing_an_interpreter_in_rust/Cargo.toml
[INFO] started frobbing chr4/writing_an_interpreter_in_rust
[INFO] finished frobbing chr4/writing_an_interpreter_in_rust
[INFO] frobbed toml for chr4/writing_an_interpreter_in_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chr4/writing_an_interpreter_in_rust/Cargo.toml
[INFO] crate chr4/writing_an_interpreter_in_rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing chr4/writing_an_interpreter_in_rust 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/chr4/writing_an_interpreter_in_rust:/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] 72789f12f2969f0044fcd54ed7b5f5f9bb7293f415a960159d26420a1c4f2b57
[INFO] running `"docker" "start" "-a" "72789f12f2969f0044fcd54ed7b5f5f9bb7293f415a960159d26420a1c4f2b57"`
[INFO] [stderr]    Compiling writing_an_interpreter_in_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `"docker" "inspect" "72789f12f2969f0044fcd54ed7b5f5f9bb7293f415a960159d26420a1c4f2b57"`
[INFO] running `"docker" "rm" "-f" "72789f12f2969f0044fcd54ed7b5f5f9bb7293f415a960159d26420a1c4f2b57"`
[INFO] [stdout] 72789f12f2969f0044fcd54ed7b5f5f9bb7293f415a960159d26420a1c4f2b57
[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/chr4/writing_an_interpreter_in_rust:/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] 9185d6a8b3b182112d7faedfa15b6aec05be4232a82baf80eba667dffe12515d
[INFO] running `"docker" "start" "-a" "9185d6a8b3b182112d7faedfa15b6aec05be4232a82baf80eba667dffe12515d"`
[INFO] [stderr]    Compiling writing_an_interpreter_in_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "9185d6a8b3b182112d7faedfa15b6aec05be4232a82baf80eba667dffe12515d"`
[INFO] running `"docker" "rm" "-f" "9185d6a8b3b182112d7faedfa15b6aec05be4232a82baf80eba667dffe12515d"`
[INFO] [stdout] 9185d6a8b3b182112d7faedfa15b6aec05be4232a82baf80eba667dffe12515d
[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/chr4/writing_an_interpreter_in_rust:/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] 0f4d0f264b042027cdd95a22852c490c15ad0b7374d8f753a750e947ead60a44
[INFO] running `"docker" "start" "-a" "0f4d0f264b042027cdd95a22852c490c15ad0b7374d8f753a750e947ead60a44"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/writing_an_interpreter_in_rust-4c611c9c4248d295
[INFO] [stderr]      Running /opt/crater/target/debug/deps/writing_an_interpreter_in_rust-50f01ef4c62a951b
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test token::lookup_ident_test ... ok
[INFO] [stdout] test lexer::is_letter_test ... ok
[INFO] [stdout] test lexer::next_token_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test lexer::is_letter_test ... ok
[INFO] [stdout] test token::lookup_ident_test ... ok
[INFO] [stdout] test lexer::next_token_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests writing_an_interpreter_in_rust
[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" "0f4d0f264b042027cdd95a22852c490c15ad0b7374d8f753a750e947ead60a44"`
[INFO] running `"docker" "rm" "-f" "0f4d0f264b042027cdd95a22852c490c15ad0b7374d8f753a750e947ead60a44"`
[INFO] [stdout] 0f4d0f264b042027cdd95a22852c490c15ad0b7374d8f753a750e947ead60a44