[INFO] updating cached repository mosbasik/CtCI-6th-Edition-Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mosbasik/CtCI-6th-Edition-Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mosbasik/CtCI-6th-Edition-Rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/mosbasik/CtCI-6th-Edition-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mosbasik/CtCI-6th-Edition-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mosbasik/CtCI-6th-Edition-Rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mosbasik/CtCI-6th-Edition-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mosbasik/CtCI-6th-Edition-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f7de2da54634d871fa8b0640e9e5c4473b96a858
[INFO] sha for GitHub repo mosbasik/CtCI-6th-Edition-Rust: f7de2da54634d871fa8b0640e9e5c4473b96a858
[INFO] validating manifest of mosbasik/CtCI-6th-Edition-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 mosbasik/CtCI-6th-Edition-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 mosbasik/CtCI-6th-Edition-Rust
[INFO] finished frobbing mosbasik/CtCI-6th-Edition-Rust
[INFO] frobbed toml for mosbasik/CtCI-6th-Edition-Rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/mosbasik/CtCI-6th-Edition-Rust/Cargo.toml
[INFO] started frobbing mosbasik/CtCI-6th-Edition-Rust
[INFO] finished frobbing mosbasik/CtCI-6th-Edition-Rust
[INFO] frobbed toml for mosbasik/CtCI-6th-Edition-Rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mosbasik/CtCI-6th-Edition-Rust/Cargo.toml
[INFO] crate mosbasik/CtCI-6th-Edition-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] testing mosbasik/CtCI-6th-Edition-Rust 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-3/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/mosbasik/CtCI-6th-Edition-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cfcc19b23115928c62104d7ee4f31d6f54d00481a6c50dbd452051bfe5a59fc0
[INFO] running `"docker" "start" "-a" "cfcc19b23115928c62104d7ee4f31d6f54d00481a6c50dbd452051bfe5a59fc0"`
[INFO] [stderr]    Compiling ctci_6th_edition_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "cfcc19b23115928c62104d7ee4f31d6f54d00481a6c50dbd452051bfe5a59fc0"`
[INFO] running `"docker" "rm" "-f" "cfcc19b23115928c62104d7ee4f31d6f54d00481a6c50dbd452051bfe5a59fc0"`
[INFO] [stdout] cfcc19b23115928c62104d7ee4f31d6f54d00481a6c50dbd452051bfe5a59fc0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/mosbasik/CtCI-6th-Edition-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] fb913d8050ec6f2b068e3d9737753953042f1acfdf5480159f4d411a810de8ae
[INFO] running `"docker" "start" "-a" "fb913d8050ec6f2b068e3d9737753953042f1acfdf5480159f4d411a810de8ae"`
[INFO] [stderr]    Compiling ctci_6th_edition_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "fb913d8050ec6f2b068e3d9737753953042f1acfdf5480159f4d411a810de8ae"`
[INFO] running `"docker" "rm" "-f" "fb913d8050ec6f2b068e3d9737753953042f1acfdf5480159f4d411a810de8ae"`
[INFO] [stdout] fb913d8050ec6f2b068e3d9737753953042f1acfdf5480159f4d411a810de8ae
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/mosbasik/CtCI-6th-Edition-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] f16b16b23fc6446de4c41f0f57483612ef3b02bcc0a91c0cc5212f136f147a2d
[INFO] running `"docker" "start" "-a" "f16b16b23fc6446de4c41f0f57483612ef3b02bcc0a91c0cc5212f136f147a2d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ctci_6th_edition_rust-10f19ac52b13a44f
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test ch_01_arrays_and_strings::q_01_is_unique::tests::test_2_false ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_01_is_unique::tests::test_1_true ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_01_is_unique::tests::test_1_false ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_01_is_unique::tests::test_2_true ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_02_check_permutation::tests::test_1_false ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_02_check_permutation::tests::test_1_true ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_02_check_permutation::tests::test_2_false ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_02_check_permutation::tests::test_2_true ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_03_urlify::tests::test_example ... ok
[INFO] [stdout] test ch_01_arrays_and_strings::q_03_urlify::tests::test_excess_trailing_spaces ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ctci_6th_edition_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" "f16b16b23fc6446de4c41f0f57483612ef3b02bcc0a91c0cc5212f136f147a2d"`
[INFO] running `"docker" "rm" "-f" "f16b16b23fc6446de4c41f0f57483612ef3b02bcc0a91c0cc5212f136f147a2d"`
[INFO] [stdout] f16b16b23fc6446de4c41f0f57483612ef3b02bcc0a91c0cc5212f136f147a2d