[INFO] crate serde-xml-rs 0.2.1 is already in cache
[INFO] extracting crate serde-xml-rs 0.2.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/serde-xml-rs/0.2.1
[INFO] extracting crate serde-xml-rs 0.2.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/serde-xml-rs/0.2.1
[INFO] validating manifest of serde-xml-rs-0.2.1 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 serde-xml-rs-0.2.1 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 serde-xml-rs-0.2.1
[INFO] finished frobbing serde-xml-rs-0.2.1
[INFO] frobbed toml for serde-xml-rs-0.2.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/serde-xml-rs/0.2.1/Cargo.toml
[INFO] started frobbing serde-xml-rs-0.2.1
[INFO] finished frobbing serde-xml-rs-0.2.1
[INFO] frobbed toml for serde-xml-rs-0.2.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/serde-xml-rs/0.2.1/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 serde-xml-rs-0.2.1 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/serde-xml-rs/0.2.1:/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] d4c75cbdf05dac55520a6a4846dea8067daae8b5010a8b3f815a96d50057309e
[INFO] running `"docker" "start" "-a" "d4c75cbdf05dac55520a6a4846dea8067daae8b5010a8b3f815a96d50057309e"`
[INFO] [stderr]    Compiling serde-xml-rs v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serialize.rs:89:23
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn serialize_bool(mut self, v: bool) -> Result<Self::Ok, Self::Error> {
[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 0.85s
[INFO] running `"docker" "inspect" "d4c75cbdf05dac55520a6a4846dea8067daae8b5010a8b3f815a96d50057309e"`
[INFO] running `"docker" "rm" "-f" "d4c75cbdf05dac55520a6a4846dea8067daae8b5010a8b3f815a96d50057309e"`
[INFO] [stdout] d4c75cbdf05dac55520a6a4846dea8067daae8b5010a8b3f815a96d50057309e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/serde-xml-rs/0.2.1:/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] 6a9d23105656485b19c188de65455add342f39644ac233dfaff34d734c881f5e
[INFO] running `"docker" "start" "-a" "6a9d23105656485b19c188de65455add342f39644ac233dfaff34d734c881f5e"`
[INFO] [stderr]    Compiling serde-xml-rs v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serialize.rs:89:23
[INFO] [stderr]    |
[INFO] [stderr] 89 |     fn serialize_bool(mut self, v: bool) -> Result<Self::Ok, Self::Error> {
[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 6.95s
[INFO] running `"docker" "inspect" "6a9d23105656485b19c188de65455add342f39644ac233dfaff34d734c881f5e"`
[INFO] running `"docker" "rm" "-f" "6a9d23105656485b19c188de65455add342f39644ac233dfaff34d734c881f5e"`
[INFO] [stdout] 6a9d23105656485b19c188de65455add342f39644ac233dfaff34d734c881f5e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/serde-xml-rs/0.2.1:/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] cd681dd3208406348f855a3443772965e6129ad22e1efdbd19527c9d12ae407b
[INFO] running `"docker" "start" "-a" "cd681dd3208406348f855a3443772965e6129ad22e1efdbd19527c9d12ae407b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_xml_rs-4ee341e3048a4512
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test serialize::tests::serialize_a_list ... ignored
[INFO] [stdout] test serialize::tests::test_start_serialize_struct ... ok
[INFO] [stdout] test serialize::tests::test_serialize_enum ... ok
[INFO] [stdout] test serialize::tests::test_serialize_bool ... ok
[INFO] [stdout] test serialize::tests::test_serialize_map_entries ... ok
[INFO] [stdout] test serialize::tests::test_serialize_struct ... ok
[INFO] [stdout] test serialize::tests::test_serialize_struct_field ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/migrated-f345d32c49cc775b
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test test_doctype_fail ... ok
[INFO] [stdout] test test_amoskvin ... ok
[INFO] [stdout] test futile2 ... ok
[INFO] [stdout] test futile ... ok
[INFO] [stdout] test test_hugo_duncan ... ok
[INFO] [stdout] test test_namespaces ... ok
[INFO] [stdout] test test_hugo_duncan2 ... ok
[INFO] [stdout] test test_doctype ... ok
[INFO] [stdout] test test_option ... ok
[INFO] [stdout] test test_forwarded_namespace ... ok
[INFO] [stdout] test test_parse_attributes ... ok
[INFO] [stdout] test test_parse_bool ... ok
[INFO] [stdout] test test_nicolai86 ... ok
[INFO] [stdout] test test_parse_enum ... ok
[INFO] [stdout] test test_parse_complexstruct ... ok
[INFO] [stdout] test test_parse_unfinished ... ok
[INFO] [stdout] test test_parse_struct ... ok
[INFO] [stdout] test test_things_qc_found ... ok
[INFO] [stdout] test test_parse_f64 ... ok
[INFO] [stdout] test test_parse_string ... ok
[INFO] [stdout] test test_parse_xml_value ... ok
[INFO] [stdout] test unknown_field ... ok
[INFO] [stdout] test test_parse_unit ... ok
[INFO] [stdout] test test_parse_u64 ... ok
[INFO] [stdout] test test_parse_hierarchies ... ok
[INFO] [stdout] test test_parse_i64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/round_trip-ce74cc04cf580114
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test round_trip_list_of_enums ... ignored
[INFO] [stdout] test basic_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test-b3f417c9256f9e46
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test simple_struct_from_attribute_and_child ... ok
[INFO] [stdout] test nested_collection ... ok
[INFO] [stdout] test collection_of_enums ... ok
[INFO] [stdout] test simple_struct_from_attributes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde-xml-rs
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/serialize.rs - serialize::serialize (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "cd681dd3208406348f855a3443772965e6129ad22e1efdbd19527c9d12ae407b"`
[INFO] running `"docker" "rm" "-f" "cd681dd3208406348f855a3443772965e6129ad22e1efdbd19527c9d12ae407b"`
[INFO] [stdout] cd681dd3208406348f855a3443772965e6129ad22e1efdbd19527c9d12ae407b