[INFO] fetching crate spdl 0.0.1...
[INFO] testing spdl-0.0.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spdl 0.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate spdl 0.0.1
[INFO] finished tweaking crates.io crate spdl 0.0.1
[INFO] tweaked toml for crates.io crate spdl 0.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spdl 0.0.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3be6ee6ab8da5d09c8a678fdf20d648262872db6fddfef07ead8dd6f4b8e33bc
[INFO] running `Command { std: "docker" "start" "-a" "3be6ee6ab8da5d09c8a678fdf20d648262872db6fddfef07ead8dd6f4b8e33bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3be6ee6ab8da5d09c8a678fdf20d648262872db6fddfef07ead8dd6f4b8e33bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3be6ee6ab8da5d09c8a678fdf20d648262872db6fddfef07ead8dd6f4b8e33bc", kill_on_drop: false }`
[INFO] [stdout] 3be6ee6ab8da5d09c8a678fdf20d648262872db6fddfef07ead8dd6f4b8e33bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4ca2d5587431affb5b5a0fb8bb4fbb6c2238b58169ef57d379bd108d9434ee92
[INFO] running `Command { std: "docker" "start" "-a" "4ca2d5587431affb5b5a0fb8bb4fbb6c2238b58169ef57d379bd108d9434ee92", kill_on_drop: false }`
[INFO] [stderr]    Compiling spdl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:925:21
[INFO] [stdout]     |
[INFO] [stdout] 925 |                 let mut finding: &mut SyntacticalInstance = finding.unwrap();
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Leak` is never used
[INFO] [stdout]    --> src/lib.rs:163:7
[INFO] [stdout]     |
[INFO] [stdout] 163 | trait Leak<T: ?Sized> {
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "4ca2d5587431affb5b5a0fb8bb4fbb6c2238b58169ef57d379bd108d9434ee92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca2d5587431affb5b5a0fb8bb4fbb6c2238b58169ef57d379bd108d9434ee92", kill_on_drop: false }`
[INFO] [stdout] 4ca2d5587431affb5b5a0fb8bb4fbb6c2238b58169ef57d379bd108d9434ee92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 871bbc5378ae8649898312f101c373e18bc215cbe03c25e43733b5189fcd20c4
[INFO] running `Command { std: "docker" "start" "-a" "871bbc5378ae8649898312f101c373e18bc215cbe03c25e43733b5189fcd20c4", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:925:21
[INFO] [stdout]     |
[INFO] [stdout] 925 |                 let mut finding: &mut SyntacticalInstance = finding.unwrap();
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Leak` is never used
[INFO] [stdout]    --> src/lib.rs:163:7
[INFO] [stdout]     |
[INFO] [stdout] 163 | trait Leak<T: ?Sized> {
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling spdl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:925:21
[INFO] [stdout]     |
[INFO] [stdout] 925 |                 let mut finding: &mut SyntacticalInstance = finding.unwrap();
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Leak` is never used
[INFO] [stdout]    --> src/lib.rs:163:7
[INFO] [stdout]     |
[INFO] [stdout] 163 | trait Leak<T: ?Sized> {
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "871bbc5378ae8649898312f101c373e18bc215cbe03c25e43733b5189fcd20c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871bbc5378ae8649898312f101c373e18bc215cbe03c25e43733b5189fcd20c4", kill_on_drop: false }`
[INFO] [stdout] 871bbc5378ae8649898312f101c373e18bc215cbe03c25e43733b5189fcd20c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 804b793f0dc5f91290d99be8deb54aa224d0a1a85a583413775b3374847ae47e
[INFO] running `Command { std: "docker" "start" "-a" "804b793f0dc5f91290d99be8deb54aa224d0a1a85a583413775b3374847ae47e", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:925:21
[INFO] [stderr]     |
[INFO] [stderr] 925 |                 let mut finding: &mut SyntacticalInstance = finding.unwrap();
[INFO] [stderr]     |                     ----^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Leak` is never used
[INFO] [stderr]    --> src/lib.rs:163:7
[INFO] [stderr]     |
[INFO] [stderr] 163 | trait Leak<T: ?Sized> {
[INFO] [stderr]     |       ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `spdl` (lib) generated 2 warnings (run `cargo fix --lib -p spdl` to apply 1 suggestion)
[INFO] [stderr] warning: `spdl` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/spdl-9826dff9744ebafe)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::printing_language ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests spdl
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 54) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "804b793f0dc5f91290d99be8deb54aa224d0a1a85a583413775b3374847ae47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804b793f0dc5f91290d99be8deb54aa224d0a1a85a583413775b3374847ae47e", kill_on_drop: false }`
[INFO] [stdout] 804b793f0dc5f91290d99be8deb54aa224d0a1a85a583413775b3374847ae47e
