[INFO] crate bigmaths 0.0.2 is already in cache
[INFO] testing bigmaths-0.0.2 against 1.38.0 for beta-1.39-1
[INFO] extracting crate bigmaths 0.0.2 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate bigmaths 0.0.2 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 crates.io crate bigmaths 0.0.2
[INFO] finished tweaking crates.io crate bigmaths 0.0.2
[INFO] tweaked toml for crates.io crate bigmaths 0.0.2 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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] aba26263839a82edadec7e1c40521f049c6fb772973a58641a5b7da6aec4cef5
[INFO] running `"docker" "start" "-a" "aba26263839a82edadec7e1c40521f049c6fb772973a58641a5b7da6aec4cef5"`
[INFO] [stderr]    Compiling bigmaths v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "aba26263839a82edadec7e1c40521f049c6fb772973a58641a5b7da6aec4cef5"`
[INFO] running `"docker" "rm" "-f" "aba26263839a82edadec7e1c40521f049c6fb772973a58641a5b7da6aec4cef5"`
[INFO] [stdout] aba26263839a82edadec7e1c40521f049c6fb772973a58641a5b7da6aec4cef5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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] 2ffa4b1098793e9608493b718244c0e9ec3a8b69a3816e4c6301642e01b81288
[INFO] running `"docker" "start" "-a" "2ffa4b1098793e9608493b718244c0e9ec3a8b69a3816e4c6301642e01b81288"`
[INFO] [stderr]    Compiling bigmaths v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "2ffa4b1098793e9608493b718244c0e9ec3a8b69a3816e4c6301642e01b81288"`
[INFO] running `"docker" "rm" "-f" "2ffa4b1098793e9608493b718244c0e9ec3a8b69a3816e4c6301642e01b81288"`
[INFO] [stdout] 2ffa4b1098793e9608493b718244c0e9ec3a8b69a3816e4c6301642e01b81288
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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] 80968675384ddd063db669efaa52d90806021e92c67e6b6ea61c758e7d90f609
[INFO] running `"docker" "start" "-a" "80968675384ddd063db669efaa52d90806021e92c67e6b6ea61c758e7d90f609"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bigmaths-dd7963bc5f51d471
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test tests::bigint_add_big_two_neg ... ok
[INFO] [stdout] test tests::bigint_add_little_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_add_big_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_from_max_isize ... ok
[INFO] [stdout] test tests::bigint_add_little_two_neg ... ok
[INFO] [stdout] test tests::bigint_add_big_two_pos ... ok
[INFO] [stdout] test tests::bigint_from_and_to_isize ... ok
[INFO] [stdout] test tests::bigint_from_min_isize ... ok
[INFO] [stdout] test tests::bigint_add_little_two_pos ... ok
[INFO] [stdout] test tests::bigint_from_negative_isize ... ok
[INFO] [stdout] test tests::bigint_from_positive_isize ... ok
[INFO] [stdout] test tests::bigint_from_zero_isize ... ok
[INFO] [stdout] test tests::bigint_sub_big_two_neg ... ok
[INFO] [stdout] test tests::bigint_sub_little_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_sub_big_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_sub_big_two_pos ... ok
[INFO] [stdout] test tests::bigint_sub_little_two_pos ... ok
[INFO] [stdout] test tests::bigint_sub_little_two_neg ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bigmaths
[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" "80968675384ddd063db669efaa52d90806021e92c67e6b6ea61c758e7d90f609"`
[INFO] running `"docker" "rm" "-f" "80968675384ddd063db669efaa52d90806021e92c67e6b6ea61c758e7d90f609"`
[INFO] [stdout] 80968675384ddd063db669efaa52d90806021e92c67e6b6ea61c758e7d90f609