[INFO] fetching crate unbug 0.4.0...
[INFO] testing unbug-0.4.0 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate unbug 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate unbug 0.4.0
[INFO] finished tweaking crates.io crate unbug 0.4.0
[INFO] tweaked toml for crates.io crate unbug 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unbug 0.4.0 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unbug 0.4.0 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" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e170a009062b162ef211b95ccaaf4b4466542799483fc8550774ece67e62f3dd
[INFO] running `Command { std: "docker" "start" "-a" "e170a009062b162ef211b95ccaaf4b4466542799483fc8550774ece67e62f3dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e170a009062b162ef211b95ccaaf4b4466542799483fc8550774ece67e62f3dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e170a009062b162ef211b95ccaaf4b4466542799483fc8550774ece67e62f3dd", kill_on_drop: false }`
[INFO] [stdout] e170a009062b162ef211b95ccaaf4b4466542799483fc8550774ece67e62f3dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31cef28ee468c6a5936e096bf3f0a5bb9f81e7b38fbb58e3437653cf2a7839c0
[INFO] running `Command { std: "docker" "start" "-a" "31cef28ee468c6a5936e096bf3f0a5bb9f81e7b38fbb58e3437653cf2a7839c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling dbg_breakpoint v0.1.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling unbug v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.52s
[INFO] running `Command { std: "docker" "inspect" "31cef28ee468c6a5936e096bf3f0a5bb9f81e7b38fbb58e3437653cf2a7839c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31cef28ee468c6a5936e096bf3f0a5bb9f81e7b38fbb58e3437653cf2a7839c0", kill_on_drop: false }`
[INFO] [stdout] 31cef28ee468c6a5936e096bf3f0a5bb9f81e7b38fbb58e3437653cf2a7839c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82aab4371f3cce5b0e036f93b33bed352e2601f40ec9a473026646a251b2a547
[INFO] running `Command { std: "docker" "start" "-a" "82aab4371f3cce5b0e036f93b33bed352e2601f40ec9a473026646a251b2a547", kill_on_drop: false }`
[INFO] [stderr]    Compiling unbug v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "82aab4371f3cce5b0e036f93b33bed352e2601f40ec9a473026646a251b2a547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82aab4371f3cce5b0e036f93b33bed352e2601f40ec9a473026646a251b2a547", kill_on_drop: false }`
[INFO] [stdout] 82aab4371f3cce5b0e036f93b33bed352e2601f40ec9a473026646a251b2a547
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 50bf251f2036b264bacbde9265fa02d4fcc8be4d268512ba3f84462e9b461dac
[INFO] running `Command { std: "docker" "start" "-a" "50bf251f2036b264bacbde9265fa02d4fcc8be4d268512ba3f84462e9b461dac", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unbug-76aca912f1d238ef)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests unbug
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/lib.rs - (line 182) ... FAILED
[INFO] [stdout] test src/lib.rs - fail (line 233) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 26) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 182) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:183:31
[INFO] [stdout]     |
[INFO] [stdout] 183 | #![cfg_attr(debug_assertions, feature(breakpoint))]
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - fail (line 233) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `some_var` in this scope
[INFO] [stdout]    --> src/lib.rs:236:46
[INFO] [stdout]     |
[INFO] [stdout] 236 | unbug::fail!("failed to do something: {:?}", some_var);
[INFO] [stdout]     |                                              ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 26) stdout ----
[INFO] [stdout] error[E0433]: cannot find module or crate `tracing_subscriber` in this scope
[INFO] [stdout]   --> src/lib.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | tracing_subscriber::fmt::init();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `tracing_subscriber`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `tracing_subscriber`, use `cargo add tracing_subscriber` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `some_option` in this scope
[INFO] [stdout]   --> src/lib.rs:56:26
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let Some(_out_var) = some_option else {
[INFO] [stdout]    |                          ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `else` clause of `let...else` does not diverge
[INFO] [stdout]   --> src/lib.rs:56:43
[INFO] [stdout]    |
[INFO] [stdout] 56 |       let Some(_out_var) = some_option else {
[INFO] [stdout]    |  ___________________________________________^
[INFO] [stdout] 57 | |         // fail! and fail_always! will continue to log a message in release builds
[INFO] [stdout] 58 | |         unbug::fail_always!("fail_always! will trigger every time");
[INFO] [stdout] 59 | |     };
[INFO] [stdout]    | |_____^ expected `!`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected type `!`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout]    = help: try adding a diverging expression, such as `return` or `panic!(..)`
[INFO] [stdout]    = help: ...or use `match` instead of `let...else`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 182)
[INFO] [stdout]     src/lib.rs - (line 26)
[INFO] [stdout]     src/lib.rs - fail (line 233)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "50bf251f2036b264bacbde9265fa02d4fcc8be4d268512ba3f84462e9b461dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50bf251f2036b264bacbde9265fa02d4fcc8be4d268512ba3f84462e9b461dac", kill_on_drop: false }`
[INFO] [stdout] 50bf251f2036b264bacbde9265fa02d4fcc8be4d268512ba3f84462e9b461dac
