[INFO] crate xi-rope 0.2.0 is already in cache
[INFO] extracting crate xi-rope 0.2.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/xi-rope/0.2.0
[INFO] extracting crate xi-rope 0.2.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/xi-rope/0.2.0
[INFO] validating manifest of xi-rope-0.2.0 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of xi-rope-0.2.0 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing xi-rope-0.2.0
[INFO] finished frobbing xi-rope-0.2.0
[INFO] frobbed toml for xi-rope-0.2.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/xi-rope/0.2.0/Cargo.toml
[INFO] started frobbing xi-rope-0.2.0
[INFO] finished frobbing xi-rope-0.2.0
[INFO] frobbed toml for xi-rope-0.2.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/xi-rope/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing xi-rope-0.2.0 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/xi-rope/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 5737ef08b1416c69dfdcc7838e2b21a4100e24bc2dc91110584cd7e9ce4a4c8a
[INFO] running `"docker" "start" "-a" "5737ef08b1416c69dfdcc7838e2b21a4100e24bc2dc91110584cd7e9ce4a4c8a"`
[INFO] [stderr]    Compiling xi-rope v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tree.rs:237:17
[INFO] [stderr]     |
[INFO] [stderr] 237 |             let mut node1 = Arc::make_mut(&mut rope1.0);
[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 2.28s
[INFO] running `"docker" "inspect" "5737ef08b1416c69dfdcc7838e2b21a4100e24bc2dc91110584cd7e9ce4a4c8a"`
[INFO] running `"docker" "rm" "-f" "5737ef08b1416c69dfdcc7838e2b21a4100e24bc2dc91110584cd7e9ce4a4c8a"`
[INFO] [stdout] 5737ef08b1416c69dfdcc7838e2b21a4100e24bc2dc91110584cd7e9ce4a4c8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/xi-rope/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7e5c0d5d8afd6b04a549ca0915e658cc3fcc746d26e3c547d1488f00c5dbbd40
[INFO] running `"docker" "start" "-a" "7e5c0d5d8afd6b04a549ca0915e658cc3fcc746d26e3c547d1488f00c5dbbd40"`
[INFO] [stderr]    Compiling xi-rope v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tree.rs:237:17
[INFO] [stderr]     |
[INFO] [stderr] 237 |             let mut node1 = Arc::make_mut(&mut rope1.0);
[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 3.96s
[INFO] running `"docker" "inspect" "7e5c0d5d8afd6b04a549ca0915e658cc3fcc746d26e3c547d1488f00c5dbbd40"`
[INFO] running `"docker" "rm" "-f" "7e5c0d5d8afd6b04a549ca0915e658cc3fcc746d26e3c547d1488f00c5dbbd40"`
[INFO] [stdout] 7e5c0d5d8afd6b04a549ca0915e658cc3fcc746d26e3c547d1488f00c5dbbd40
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/xi-rope/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 795a6a599951ad9c930c4604d24ec10c36f6a02bcb27f2e31dc84a42cd19a9f7
[INFO] running `"docker" "start" "-a" "795a6a599951ad9c930c4604d24ec10c36f6a02bcb27f2e31dc84a42cd19a9f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/xi_rope-e9caf02b811fc442
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test breaks::tests::larger ... ok
[INFO] [stdout] test breaks::tests::fromleaf ... ok
[INFO] [stdout] test breaks::tests::one ... ok
[INFO] [stdout] test breaks::tests::empty ... ok
[INFO] [stdout] test breaks::tests::concat ... ok
[INFO] [stdout] test delta::tests::simple ... ok
[INFO] [stdout] test delta::tests::factor ... ok
[INFO] [stdout] test delta::tests::transform_expand ... ok
[INFO] [stdout] test eq_small ... ok
[INFO] [stdout] test delta::tests::invert_insert ... ok
[INFO] [stdout] test delta::tests::synthesize ... ok
[INFO] [stdout] test eq_med ... ok
[INFO] [stdout] test interval::tests::new_variants ... ok
[INFO] [stdout] test interval::tests::contains ... ok
[INFO] [stdout] test interval::tests::new_params ... ok
[INFO] [stdout] test interval::tests::before ... ok
[INFO] [stdout] test interval::tests::intersect ... ok
[INFO] [stdout] test interval::tests::after ... ok
[INFO] [stdout] test interval::tests::empty ... ok
[INFO] [stdout] test interval::tests::prefix ... ok
[INFO] [stdout] test interval::tests::size ... ok
[INFO] [stdout] test interval::tests::suffix ... ok
[INFO] [stdout] test interval::tests::translate ... ok
[INFO] [stdout] test line_of_offset_small ... ok
[INFO] [stdout] test lines_med ... ok
[INFO] [stdout] test lines_raw_small ... ok
[INFO] [stdout] test lines_small ... ok
[INFO] [stdout] test next_codepoint_offset_small ... ok
[INFO] [stdout] test offset_of_line_small ... ok
[INFO] [stdout] test prev_codepoint_offset_small ... ok
[INFO] [stdout] test rope::tests::next_codepoint_offset_small ... ok
[INFO] [stdout] test subset::tests::test_apply ... ok
[INFO] [stdout] test subset::tests::test_mk_subset ... ok
[INFO] [stdout] test subset::tests::transform ... ok
[INFO] [stdout] test subset::tests::trivial ... ok
[INFO] [stdout] test rope::tests::replace_small ... ok
[INFO] [stdout] test subset::tests::intersect ... ok
[INFO] [stdout] test rope::tests::prev_codepoint_offset_small ... ok
[INFO] [stdout] test append_large ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xi-rope
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - Rope (line 70) ... ok
[INFO] [stdout] test src/lib.rs - Rope (line 91) ... ok
[INFO] [stdout] test src/lib.rs - Rope (line 80) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "795a6a599951ad9c930c4604d24ec10c36f6a02bcb27f2e31dc84a42cd19a9f7"`
[INFO] running `"docker" "rm" "-f" "795a6a599951ad9c930c4604d24ec10c36f6a02bcb27f2e31dc84a42cd19a9f7"`
[INFO] [stdout] 795a6a599951ad9c930c4604d24ec10c36f6a02bcb27f2e31dc84a42cd19a9f7