[INFO] crate insert_multiple 0.2.0 is already in cache
[INFO] extracting crate insert_multiple 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/insert_multiple/0.2.0
[INFO] extracting crate insert_multiple 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/insert_multiple/0.2.0
[INFO] validating manifest of insert_multiple-0.2.0 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 insert_multiple-0.2.0 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 insert_multiple-0.2.0
[INFO] finished frobbing insert_multiple-0.2.0
[INFO] frobbed toml for insert_multiple-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/insert_multiple/0.2.0/Cargo.toml
[INFO] started frobbing insert_multiple-0.2.0
[INFO] finished frobbing insert_multiple-0.2.0
[INFO] frobbed toml for insert_multiple-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/insert_multiple/0.2.0/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 insert_multiple-0.2.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/insert_multiple/0.2.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 316d31d6c3d3346fda064869cb41b153917838177ebb84fd593bc599a4b800d0
[INFO] running `"docker" "start" "-a" "316d31d6c3d3346fda064869cb41b153917838177ebb84fd593bc599a4b800d0"`
[INFO] [stderr]    Compiling insert_multiple v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/inserter.rs:42:27
[INFO] [stderr]    |
[INFO] [stderr] 42 |         for (&insert_idx, mut to_insert) in self.insertions.iter_mut() {
[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 0.50s
[INFO] running `"docker" "inspect" "316d31d6c3d3346fda064869cb41b153917838177ebb84fd593bc599a4b800d0"`
[INFO] running `"docker" "rm" "-f" "316d31d6c3d3346fda064869cb41b153917838177ebb84fd593bc599a4b800d0"`
[INFO] [stdout] 316d31d6c3d3346fda064869cb41b153917838177ebb84fd593bc599a4b800d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/insert_multiple/0.2.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] df614daf716e5dee4b2728bb2e69236528ada44158ee6f9548789d6bdd14957f
[INFO] running `"docker" "start" "-a" "df614daf716e5dee4b2728bb2e69236528ada44158ee6f9548789d6bdd14957f"`
[INFO] [stderr]    Compiling insert_multiple v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/inserter.rs:42:27
[INFO] [stderr]    |
[INFO] [stderr] 42 |         for (&insert_idx, mut to_insert) in self.insertions.iter_mut() {
[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 0.90s
[INFO] running `"docker" "inspect" "df614daf716e5dee4b2728bb2e69236528ada44158ee6f9548789d6bdd14957f"`
[INFO] running `"docker" "rm" "-f" "df614daf716e5dee4b2728bb2e69236528ada44158ee6f9548789d6bdd14957f"`
[INFO] [stdout] df614daf716e5dee4b2728bb2e69236528ada44158ee6f9548789d6bdd14957f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/insert_multiple/0.2.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] d1f90f24a2dff8fb7edc4e9c73ca934f77ea8ca9091e6832f7be25a868e1a050
[INFO] running `"docker" "start" "-a" "d1f90f24a2dff8fb7edc4e9c73ca934f77ea8ca9091e6832f7be25a868e1a050"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/insert_multiple-84e7d027f0668835
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test inserter::tests::insert_one_at_end ... ok
[INFO] [stdout] test inserter::tests::insert_one_past_end ... ok
[INFO] [stdout] test inserter::tests::insert_one_at_beginning ... ok
[INFO] [stdout] test string_inserter::tests::insert_one_at_beginning ... ok
[INFO] [stdout] test string_inserter::tests::insert_one_past_end ... ok
[INFO] [stdout] test string_inserter::tests::insert_one_at_end ... ok
[INFO] [stdout] test inserter::tests::interleave ... ok
[INFO] [stdout] test string_inserter::tests::interleave ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests insert_multiple
[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" "d1f90f24a2dff8fb7edc4e9c73ca934f77ea8ca9091e6832f7be25a868e1a050"`
[INFO] running `"docker" "rm" "-f" "d1f90f24a2dff8fb7edc4e9c73ca934f77ea8ca9091e6832f7be25a868e1a050"`
[INFO] [stdout] d1f90f24a2dff8fb7edc4e9c73ca934f77ea8ca9091e6832f7be25a868e1a050