[INFO] updating cached repository https://github.com/justinbarclay/diff
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b474157f4d0d2d2c667ba0bd8f2457eda8ef12e
[INFO] testing justinbarclay/diff against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinbarclay%2Fdiff" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justinbarclay/diff on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/justinbarclay/diff
[INFO] finished tweaking git repo https://github.com/justinbarclay/diff
[INFO] tweaked toml for git repo https://github.com/justinbarclay/diff written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/justinbarclay/diff already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 567648759c0f68f69c537d5e7ce99e71c56334c4d96aa70c2d3ed27c5e26eca1
[INFO] running `"docker" "start" "-a" "567648759c0f68f69c537d5e7ce99e71c56334c4d96aa70c2d3ed27c5e26eca1"`
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling rdiff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/negative_array.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn get(&self, offset: isize) -> isize {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/negative_array.rs:62:3
[INFO] [stderr]    |
[INFO] [stderr] 62 |   pub fn set(&mut self, offset: isize, value: isize) -> &mut NegativeArray {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.42s
[INFO] running `"docker" "inspect" "567648759c0f68f69c537d5e7ce99e71c56334c4d96aa70c2d3ed27c5e26eca1"`
[INFO] running `"docker" "rm" "-f" "567648759c0f68f69c537d5e7ce99e71c56334c4d96aa70c2d3ed27c5e26eca1"`
[INFO] [stdout] 567648759c0f68f69c537d5e7ce99e71c56334c4d96aa70c2d3ed27c5e26eca1
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d3faa7f8ff1448e0b1ae11fd2ba924a75c883f12d76608d413ba604184330ee2
[INFO] running `"docker" "start" "-a" "d3faa7f8ff1448e0b1ae11fd2ba924a75c883f12d76608d413ba604184330ee2"`
[INFO] [stderr]    Compiling rdiff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "d3faa7f8ff1448e0b1ae11fd2ba924a75c883f12d76608d413ba604184330ee2"`
[INFO] running `"docker" "rm" "-f" "d3faa7f8ff1448e0b1ae11fd2ba924a75c883f12d76608d413ba604184330ee2"`
[INFO] [stdout] d3faa7f8ff1448e0b1ae11fd2ba924a75c883f12d76608d413ba604184330ee2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] ab5a0361159536d83cacbf62cd4ab5775dabc7d25b0bf476c844eacadbbd8954
[INFO] running `"docker" "start" "-a" "ab5a0361159536d83cacbf62cd4ab5775dabc7d25b0bf476c844eacadbbd8954"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rdiff-1ff815db7fb9a21d
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test diff::tests::gen_an_edit_sequence_for_a_diff_of_zero ... ok
[INFO] [stdout] test diff::tests::gen_edit_graph ... ok
[INFO] [stdout] test diff::tests::a_short_squence_where_they_are_the_same ... ok
[INFO] [stdout] test diff::tests::gen_edit_graph_without_newlines ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_for_empty_string ... ok
[INFO] [stdout] test diff::tests::greedy_diff ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_where_they_are_the_same ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_where_nothing_matches ... ok
[INFO] [stdout] test diff::tests::split_string_hello ... ok
[INFO] [stdout] test diff::tests::short_edit_sequence_without_newlines ... ok
[INFO] [stdout] test negative_array::tests::creating_a_new_array ... ok
[INFO] [stdout] test negative_array::tests::indexing_an_array ... ok
[INFO] [stdout] test negative_array::tests::using_get_and_set ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ab5a0361159536d83cacbf62cd4ab5775dabc7d25b0bf476c844eacadbbd8954"`
[INFO] running `"docker" "rm" "-f" "ab5a0361159536d83cacbf62cd4ab5775dabc7d25b0bf476c844eacadbbd8954"`
[INFO] [stdout] ab5a0361159536d83cacbf62cd4ab5775dabc7d25b0bf476c844eacadbbd8954