[INFO] crate durationfmt 0.1.1 is already in cache
[INFO] extracting crate durationfmt 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/durationfmt/0.1.1
[INFO] extracting crate durationfmt 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/durationfmt/0.1.1
[INFO] validating manifest of durationfmt-0.1.1 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 durationfmt-0.1.1 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 durationfmt-0.1.1
[INFO] finished frobbing durationfmt-0.1.1
[INFO] frobbed toml for durationfmt-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/durationfmt/0.1.1/Cargo.toml
[INFO] started frobbing durationfmt-0.1.1
[INFO] finished frobbing durationfmt-0.1.1
[INFO] frobbed toml for durationfmt-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/durationfmt/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing durationfmt-0.1.1 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/durationfmt/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] fbf725727d352bd49cf303568e85ee5061017e5de9a9efcfcc45da5465dfe7dd
[INFO] running `"docker" "start" "-a" "fbf725727d352bd49cf303568e85ee5061017e5de9a9efcfcc45da5465dfe7dd"`
[INFO] [stderr]    Compiling durationfmt v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `prec` is never read
[INFO] [stderr]   --> src/lib.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut prec = 0;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "fbf725727d352bd49cf303568e85ee5061017e5de9a9efcfcc45da5465dfe7dd"`
[INFO] running `"docker" "rm" "-f" "fbf725727d352bd49cf303568e85ee5061017e5de9a9efcfcc45da5465dfe7dd"`
[INFO] [stdout] fbf725727d352bd49cf303568e85ee5061017e5de9a9efcfcc45da5465dfe7dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/durationfmt/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f81962a9e953c14519329e48c032cc8dbd44b611c5745fd1dea1c955f260eb9d
[INFO] running `"docker" "start" "-a" "f81962a9e953c14519329e48c032cc8dbd44b611c5745fd1dea1c955f260eb9d"`
[INFO] [stderr]    Compiling durationfmt v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `prec` is never read
[INFO] [stderr]   --> src/lib.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut prec = 0;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "f81962a9e953c14519329e48c032cc8dbd44b611c5745fd1dea1c955f260eb9d"`
[INFO] running `"docker" "rm" "-f" "f81962a9e953c14519329e48c032cc8dbd44b611c5745fd1dea1c955f260eb9d"`
[INFO] [stdout] f81962a9e953c14519329e48c032cc8dbd44b611c5745fd1dea1c955f260eb9d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/durationfmt/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ae779b6145e67f0a8dcd720221156c9f09ddccdc3afedd5b57de767932001308
[INFO] running `"docker" "start" "-a" "ae779b6145e67f0a8dcd720221156c9f09ddccdc3afedd5b57de767932001308"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/durationfmt-d0a6bfb3ab1ad390
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_to_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests durationfmt
[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" "ae779b6145e67f0a8dcd720221156c9f09ddccdc3afedd5b57de767932001308"`
[INFO] running `"docker" "rm" "-f" "ae779b6145e67f0a8dcd720221156c9f09ddccdc3afedd5b57de767932001308"`
[INFO] [stdout] ae779b6145e67f0a8dcd720221156c9f09ddccdc3afedd5b57de767932001308