[INFO] fetching crate rg_records_rs 0.1.0...
[INFO] testing rg_records_rs-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate rg_records_rs 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rg_records_rs 0.1.0
[INFO] finished tweaking crates.io crate rg_records_rs 0.1.0
[INFO] tweaked toml for crates.io crate rg_records_rs 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rg_records_rs 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rg_records_rs 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f544ad6649599849605da45ec1d063e425d1bff8a68ae99445065757e5f2b170
[INFO] running `Command { std: "docker" "start" "-a" "f544ad6649599849605da45ec1d063e425d1bff8a68ae99445065757e5f2b170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f544ad6649599849605da45ec1d063e425d1bff8a68ae99445065757e5f2b170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f544ad6649599849605da45ec1d063e425d1bff8a68ae99445065757e5f2b170", kill_on_drop: false }`
[INFO] [stdout] f544ad6649599849605da45ec1d063e425d1bff8a68ae99445065757e5f2b170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cea01be77ccccc265124ea7469d0cab0c2c25226a8efb484013764d1a29b1489
[INFO] running `Command { std: "docker" "start" "-a" "cea01be77ccccc265124ea7469d0cab0c2c25226a8efb484013764d1a29b1489", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustkorean v1.1.2
[INFO] [stderr]    Compiling rg_records_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut a_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut b_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "cea01be77ccccc265124ea7469d0cab0c2c25226a8efb484013764d1a29b1489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea01be77ccccc265124ea7469d0cab0c2c25226a8efb484013764d1a29b1489", kill_on_drop: false }`
[INFO] [stdout] cea01be77ccccc265124ea7469d0cab0c2c25226a8efb484013764d1a29b1489
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fbb08d442f0b9d2ad289902ecf439ecfc67d3d42dd0ccde4602b74ede6f7204
[INFO] running `Command { std: "docker" "start" "-a" "6fbb08d442f0b9d2ad289902ecf439ecfc67d3d42dd0ccde4602b74ede6f7204", kill_on_drop: false }`
[INFO] [stderr]    Compiling rg_records_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut a_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut b_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |         element::song::{self, Song, Title, sort_by_title},
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut a_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_first_char` is never read
[INFO] [stdout]   --> src/element/song.rs:32:32
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut b_first_char = 'a';
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "6fbb08d442f0b9d2ad289902ecf439ecfc67d3d42dd0ccde4602b74ede6f7204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fbb08d442f0b9d2ad289902ecf439ecfc67d3d42dd0ccde4602b74ede6f7204", kill_on_drop: false }`
[INFO] [stdout] 6fbb08d442f0b9d2ad289902ecf439ecfc67d3d42dd0ccde4602b74ede6f7204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3198c0bc5f758d551ed3c4ec33a4efb107d23bf953a3a21129dfa5f4ef7e343c
[INFO] running `Command { std: "docker" "start" "-a" "3198c0bc5f758d551ed3c4ec33a4efb107d23bf953a3a21129dfa5f4ef7e343c", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `a_first_char` is never read
[INFO] [stderr]   --> src/element/song.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut a_first_char = 'a';
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b_first_char` is never read
[INFO] [stderr]   --> src/element/song.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut b_first_char = 'a';
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `rg_records_rs` (lib) generated 2 warnings
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/lib.rs:8:25
[INFO] [stderr]   |
[INFO] [stderr] 8 |         element::song::{self, Song, Title, sort_by_title},
[INFO] [stderr]   |                         ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rg_records_rs` (lib test) generated 3 warnings (2 duplicates) (run `cargo fix --lib -p rg_records_rs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rg_records_rs-6c26f5fbacf69e04)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::title_sort ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rg_records_rs
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3198c0bc5f758d551ed3c4ec33a4efb107d23bf953a3a21129dfa5f4ef7e343c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3198c0bc5f758d551ed3c4ec33a4efb107d23bf953a3a21129dfa5f4ef7e343c", kill_on_drop: false }`
[INFO] [stdout] 3198c0bc5f758d551ed3c4ec33a4efb107d23bf953a3a21129dfa5f4ef7e343c