[INFO] fetching crate repl_lib 0.3.3...
[INFO] testing repl_lib-0.3.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate repl_lib 0.3.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate repl_lib 0.3.3
[INFO] finished tweaking crates.io crate repl_lib 0.3.3
[INFO] tweaked toml for crates.io crate repl_lib 0.3.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate repl_lib 0.3.3 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate repl_lib 0.3.3 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 652003fdd71e2daf1793ff7e266deb242f72df03a557db8f1a498e79077fbc2a
[INFO] running `Command { std: "docker" "start" "-a" "652003fdd71e2daf1793ff7e266deb242f72df03a557db8f1a498e79077fbc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "652003fdd71e2daf1793ff7e266deb242f72df03a557db8f1a498e79077fbc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "652003fdd71e2daf1793ff7e266deb242f72df03a557db8f1a498e79077fbc2a", kill_on_drop: false }`
[INFO] [stdout] 652003fdd71e2daf1793ff7e266deb242f72df03a557db8f1a498e79077fbc2a
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bac01c9cd3abf5424813b6caeec9794e7f507f43dced46f3319c1d387c22ec98
[INFO] running `Command { std: "docker" "start" "-a" "bac01c9cd3abf5424813b6caeec9794e7f507f43dced46f3319c1d387c22ec98", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling term_manager v0.1.3
[INFO] [stderr]    Compiling repl_lib v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]    --> src/lib.rs:206:42
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let mut output: Option<String> = None;
[INFO] [stdout]     |                                          ^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 247 |                         output = Some((self.process_line)(finished_line)?);
[INFO] [stdout]     |                         ------ `output` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "bac01c9cd3abf5424813b6caeec9794e7f507f43dced46f3319c1d387c22ec98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac01c9cd3abf5424813b6caeec9794e7f507f43dced46f3319c1d387c22ec98", kill_on_drop: false }`
[INFO] [stdout] bac01c9cd3abf5424813b6caeec9794e7f507f43dced46f3319c1d387c22ec98
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b34a76290ef2c6fc8ab7a6f3de904c5a317fe42aaa8df0a6c7a03874d877e885
[INFO] running `Command { std: "docker" "start" "-a" "b34a76290ef2c6fc8ab7a6f3de904c5a317fe42aaa8df0a6c7a03874d877e885", kill_on_drop: false }`
[INFO] [stderr]    Compiling repl_lib v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]    --> src/lib.rs:206:42
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let mut output: Option<String> = None;
[INFO] [stdout]     |                                          ^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 247 |                         output = Some((self.process_line)(finished_line)?);
[INFO] [stdout]     |                         ------ `output` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]    --> src/lib.rs:206:42
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let mut output: Option<String> = None;
[INFO] [stdout]     |                                          ^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 247 |                         output = Some((self.process_line)(finished_line)?);
[INFO] [stdout]     |                         ------ `output` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "b34a76290ef2c6fc8ab7a6f3de904c5a317fe42aaa8df0a6c7a03874d877e885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34a76290ef2c6fc8ab7a6f3de904c5a317fe42aaa8df0a6c7a03874d877e885", kill_on_drop: false }`
[INFO] [stdout] b34a76290ef2c6fc8ab7a6f3de904c5a317fe42aaa8df0a6c7a03874d877e885
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 676f66f65171f0d72e79d7751dddb938d3618912e995dd45d970f7a096b273ac
[INFO] running `Command { std: "docker" "start" "-a" "676f66f65171f0d72e79d7751dddb938d3618912e995dd45d970f7a096b273ac", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `output` is never read
[INFO] [stderr]    --> src/lib.rs:206:42
[INFO] [stderr]     |
[INFO] [stderr] 206 |         let mut output: Option<String> = None;
[INFO] [stderr]     |                                          ^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 247 |                         output = Some((self.process_line)(finished_line)?);
[INFO] [stderr]     |                         ------ `output` is overwritten here before the previous value is read
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `repl_lib` (lib) generated 1 warning
[INFO] [stderr] warning: `repl_lib` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/repl_lib-bc0b406b711c464f)
[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] [stderr]    Doc-tests repl_lib
[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" "676f66f65171f0d72e79d7751dddb938d3618912e995dd45d970f7a096b273ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676f66f65171f0d72e79d7751dddb938d3618912e995dd45d970f7a096b273ac", kill_on_drop: false }`
[INFO] [stdout] 676f66f65171f0d72e79d7751dddb938d3618912e995dd45d970f7a096b273ac
