[INFO] fetching crate defmt-ringbuf 0.2.0...
[INFO] testing defmt-ringbuf-0.2.0 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate defmt-ringbuf 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate defmt-ringbuf 0.2.0 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate defmt-ringbuf 0.2.0
[INFO] finished tweaking crates.io crate defmt-ringbuf 0.2.0
[INFO] tweaked toml for crates.io crate defmt-ringbuf 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.15.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.23)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a94ed63e52b9044d43699164b5704b6d0e9efeda8273608f07132919546e9259
[INFO] running `Command { std: "docker" "start" "-a" "a94ed63e52b9044d43699164b5704b6d0e9efeda8273608f07132919546e9259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a94ed63e52b9044d43699164b5704b6d0e9efeda8273608f07132919546e9259", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a94ed63e52b9044d43699164b5704b6d0e9efeda8273608f07132919546e9259", kill_on_drop: false }`
[INFO] [stdout] a94ed63e52b9044d43699164b5704b6d0e9efeda8273608f07132919546e9259
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2083fc0e3f31664c9bf4e405ce8b34ae7b81c48f606b5b6051a38fefbc19ad5
[INFO] running `Command { std: "docker" "start" "-a" "e2083fc0e3f31664c9bf4e405ce8b34ae7b81c48f606b5b6051a38fefbc19ad5", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling defmt-macros v0.3.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling defmt v0.3.8
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling defmt-parser v0.3.4
[INFO] [stderr]    Compiling defmt-ringbuf v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.81s
[INFO] running `Command { std: "docker" "inspect" "e2083fc0e3f31664c9bf4e405ce8b34ae7b81c48f606b5b6051a38fefbc19ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2083fc0e3f31664c9bf4e405ce8b34ae7b81c48f606b5b6051a38fefbc19ad5", kill_on_drop: false }`
[INFO] [stdout] e2083fc0e3f31664c9bf4e405ce8b34ae7b81c48f606b5b6051a38fefbc19ad5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f403d6fbc6f92bc3a6cd7f553efe6c9b32bd9d8932fe087b5ce35fad401d0738
[INFO] running `Command { std: "docker" "start" "-a" "f403d6fbc6f92bc3a6cd7f553efe6c9b32bd9d8932fe087b5ce35fad401d0738", kill_on_drop: false }`
[INFO] [stderr]    Compiling defmt-ringbuf v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "f403d6fbc6f92bc3a6cd7f553efe6c9b32bd9d8932fe087b5ce35fad401d0738", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f403d6fbc6f92bc3a6cd7f553efe6c9b32bd9d8932fe087b5ce35fad401d0738", kill_on_drop: false }`
[INFO] [stdout] f403d6fbc6f92bc3a6cd7f553efe6c9b32bd9d8932fe087b5ce35fad401d0738
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f84d0c05ab8dd43ef9d62f0874a3aba0ab79269fdc27cdd88a6a6c51a1f85d5e
[INFO] running `Command { std: "docker" "start" "-a" "f84d0c05ab8dd43ef9d62f0874a3aba0ab79269fdc27cdd88a6a6c51a1f85d5e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/defmt_ringbuf-70278c345aa5a089)
[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 defmt_ringbuf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 9) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 9) stdout ----
[INFO] [stdout] error: cannot find attribute `entry` in this scope
[INFO] [stdout]  --> src/lib.rs:16:3
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[entry]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     unsafe {
[INFO] [stdout] 12 | |         defmt_ringbuf::init(&mut LOG, || ());
[INFO] [stdout] 13 | |     }
[INFO] [stdout]    | |_____^ expected `!`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected type `!`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged
[INFO] [stdout]   --> src/lib.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 12 |         defmt_ringbuf::init(&mut LOG, || ());
[INFO] [stdout]    |                             ^^^^^^^^ mutable reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see issue #114447 <https://github.com/rust-lang/rust/issues/114447>
[INFO] [stdout]    = note: this will be a hard error in the 2024 edition
[INFO] [stdout]    = note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` on by default
[INFO] [stdout] help: use `addr_of_mut!` instead to create a raw pointer
[INFO] [stdout]    |
[INFO] [stdout] 12 |         defmt_ringbuf::init(addr_of_mut!(LOG), || ());
[INFO] [stdout]    |                             ~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 9)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "f84d0c05ab8dd43ef9d62f0874a3aba0ab79269fdc27cdd88a6a6c51a1f85d5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f84d0c05ab8dd43ef9d62f0874a3aba0ab79269fdc27cdd88a6a6c51a1f85d5e", kill_on_drop: false }`
[INFO] [stdout] f84d0c05ab8dd43ef9d62f0874a3aba0ab79269fdc27cdd88a6a6c51a1f85d5e
