[INFO] crate leaky-cow 0.1.1 is already in cache
[INFO] extracting crate leaky-cow 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/leaky-cow/0.1.1
[INFO] extracting crate leaky-cow 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/leaky-cow/0.1.1
[INFO] validating manifest of leaky-cow-0.1.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of leaky-cow-0.1.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing leaky-cow-0.1.1
[INFO] finished frobbing leaky-cow-0.1.1
[INFO] frobbed toml for leaky-cow-0.1.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/leaky-cow/0.1.1/Cargo.toml
[INFO] started frobbing leaky-cow-0.1.1
[INFO] finished frobbing leaky-cow-0.1.1
[INFO] frobbed toml for leaky-cow-0.1.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/leaky-cow/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing leaky-cow-0.1.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/leaky-cow/0.1.1:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] b2606ace03300a1b901fb46a948c7d085051e28c16ced38fc05ea6aa01fc1e86
[INFO] running `"docker" "start" "-a" "b2606ace03300a1b901fb46a948c7d085051e28c16ced38fc05ea6aa01fc1e86"`
[INFO] [stderr]    Compiling leak v0.1.2
[INFO] [stderr]    Compiling leaky-cow v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Borrow`
[INFO] [stderr]  --> src/lib.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::borrow::{Borrow, Cow, ToOwned};
[INFO] [stderr]   |                   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "b2606ace03300a1b901fb46a948c7d085051e28c16ced38fc05ea6aa01fc1e86"`
[INFO] running `"docker" "rm" "-f" "b2606ace03300a1b901fb46a948c7d085051e28c16ced38fc05ea6aa01fc1e86"`
[INFO] [stdout] b2606ace03300a1b901fb46a948c7d085051e28c16ced38fc05ea6aa01fc1e86
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/leaky-cow/0.1.1:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7970d93049aa823abe314921e78978b9ebc5ad4140d927bbf1b817f3fee55431
[INFO] running `"docker" "start" "-a" "7970d93049aa823abe314921e78978b9ebc5ad4140d927bbf1b817f3fee55431"`
[INFO] [stderr]    Compiling leaky-cow v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Borrow`
[INFO] [stderr]  --> src/lib.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::borrow::{Borrow, Cow, ToOwned};
[INFO] [stderr]   |                   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "7970d93049aa823abe314921e78978b9ebc5ad4140d927bbf1b817f3fee55431"`
[INFO] running `"docker" "rm" "-f" "7970d93049aa823abe314921e78978b9ebc5ad4140d927bbf1b817f3fee55431"`
[INFO] [stdout] 7970d93049aa823abe314921e78978b9ebc5ad4140d927bbf1b817f3fee55431
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/leaky-cow/0.1.1:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e6cadcba9f7a475f20a17352759621a1da213c2130025355806d51004e48e893
[INFO] running `"docker" "start" "-a" "e6cadcba9f7a475f20a17352759621a1da213c2130025355806d51004e48e893"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/leaky_cow-0d9de4f7a4b419b4
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_string ... ok
[INFO] [stderr]    Doc-tests leaky-cow
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "e6cadcba9f7a475f20a17352759621a1da213c2130025355806d51004e48e893"`
[INFO] running `"docker" "rm" "-f" "e6cadcba9f7a475f20a17352759621a1da213c2130025355806d51004e48e893"`
[INFO] [stdout] e6cadcba9f7a475f20a17352759621a1da213c2130025355806d51004e48e893