[INFO] crate stacktools 0.1.0 is already in cache
[INFO] extracting crate stacktools 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/stacktools/0.1.0
[INFO] extracting crate stacktools 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stacktools/0.1.0
[INFO] validating manifest of stacktools-0.1.0 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 stacktools-0.1.0 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 stacktools-0.1.0
[INFO] finished frobbing stacktools-0.1.0
[INFO] frobbed toml for stacktools-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/stacktools/0.1.0/Cargo.toml
[INFO] started frobbing stacktools-0.1.0
[INFO] finished frobbing stacktools-0.1.0
[INFO] frobbed toml for stacktools-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stacktools/0.1.0/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 stacktools-0.1.0 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-0/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/stacktools/0.1.0:/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] 15a1541e976110cee2eeec5081bd67e0cc90acb0ff2a4045c920f793d2ed553d
[INFO] running `"docker" "start" "-a" "15a1541e976110cee2eeec5081bd67e0cc90acb0ff2a4045c920f793d2ed553d"`
[INFO] [stderr]    Compiling stacktools v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn push(&mut self, v: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn iter(&self) -> vec_deque::Iter<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/lib.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/lib.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn push(&mut self, v: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn iter(&self) -> vec_deque::Iter<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/lib.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/lib.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn push(&mut self, v: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/lib.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn iter(&self) -> binary_heap::Iter<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "15a1541e976110cee2eeec5081bd67e0cc90acb0ff2a4045c920f793d2ed553d"`
[INFO] running `"docker" "rm" "-f" "15a1541e976110cee2eeec5081bd67e0cc90acb0ff2a4045c920f793d2ed553d"`
[INFO] [stdout] 15a1541e976110cee2eeec5081bd67e0cc90acb0ff2a4045c920f793d2ed553d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/stacktools/0.1.0:/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] 967ca3908a09c2ac52ecf32a94ed2ca847d1229c5d9dc2896bcc63d71e8be58d
[INFO] running `"docker" "start" "-a" "967ca3908a09c2ac52ecf32a94ed2ca847d1229c5d9dc2896bcc63d71e8be58d"`
[INFO] [stderr]    Compiling stacktools v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "967ca3908a09c2ac52ecf32a94ed2ca847d1229c5d9dc2896bcc63d71e8be58d"`
[INFO] running `"docker" "rm" "-f" "967ca3908a09c2ac52ecf32a94ed2ca847d1229c5d9dc2896bcc63d71e8be58d"`
[INFO] [stdout] 967ca3908a09c2ac52ecf32a94ed2ca847d1229c5d9dc2896bcc63d71e8be58d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/stacktools/0.1.0:/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] a46f4bb294fcba74c9fca27cf0899ab1167209dcbd9164876201cb1181280fbd
[INFO] running `"docker" "start" "-a" "a46f4bb294fcba74c9fca27cf0899ab1167209dcbd9164876201cb1181280fbd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stacktools-bd5c4ce6dc5589b3
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::priority_instantiate ... ok
[INFO] [stdout] test tests::lifo_instantiate ... ok
[INFO] [stdout] test tests::fifo_instantiate ... 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 stacktools
[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" "a46f4bb294fcba74c9fca27cf0899ab1167209dcbd9164876201cb1181280fbd"`
[INFO] running `"docker" "rm" "-f" "a46f4bb294fcba74c9fca27cf0899ab1167209dcbd9164876201cb1181280fbd"`
[INFO] [stdout] a46f4bb294fcba74c9fca27cf0899ab1167209dcbd9164876201cb1181280fbd