[INFO] fetching crate promptly 0.3.1...
[INFO] testing promptly-0.3.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate promptly 0.3.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate promptly 0.3.1
[INFO] finished tweaking crates.io crate promptly 0.3.1
[INFO] tweaked toml for crates.io crate promptly 0.3.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate promptly 0.3.1 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] crate crates.io crate promptly 0.3.1 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 35e0cd5270bce19e5b501d5a2d88c2c0fb420c51ca442d685610f0320b875b56
[INFO] running `Command { std: "docker" "start" "-a" "35e0cd5270bce19e5b501d5a2d88c2c0fb420c51ca442d685610f0320b875b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35e0cd5270bce19e5b501d5a2d88c2c0fb420c51ca442d685610f0320b875b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35e0cd5270bce19e5b501d5a2d88c2c0fb420c51ca442d685610f0320b875b56", kill_on_drop: false }`
[INFO] [stdout] 35e0cd5270bce19e5b501d5a2d88c2c0fb420c51ca442d685610f0320b875b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 21f6db6bd9e3e9511f39238baee73f99b5b8219418c752079fe688b75a08da9d
[INFO] running `Command { std: "docker" "start" "-a" "21f6db6bd9e3e9511f39238baee73f99b5b8219418c752079fe688b75a08da9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling io-lifetimes v0.6.1
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling rustix v0.34.8
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling linux-raw-sys v0.0.46
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling fd-lock v3.0.5
[INFO] [stderr]    Compiling rustyline v9.1.2
[INFO] [stderr]    Compiling promptly v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]  --> src/from_str.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | default impl<T> Promptable for T
[INFO] [stdout]   | ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]   = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.28s
[INFO] running `Command { std: "docker" "inspect" "21f6db6bd9e3e9511f39238baee73f99b5b8219418c752079fe688b75a08da9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f6db6bd9e3e9511f39238baee73f99b5b8219418c752079fe688b75a08da9d", kill_on_drop: false }`
[INFO] [stdout] 21f6db6bd9e3e9511f39238baee73f99b5b8219418c752079fe688b75a08da9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fb65dc003d73915ebf1e21ac1b6a13d8b95d6e40fdd09881757c7ab7bd68a42c
[INFO] running `Command { std: "docker" "start" "-a" "fb65dc003d73915ebf1e21ac1b6a13d8b95d6e40fdd09881757c7ab7bd68a42c", kill_on_drop: false }`
[INFO] [stderr]    Compiling promptly v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]  --> src/from_str.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | default impl<T> Promptable for T
[INFO] [stdout]   | ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]   = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: specialization is experimental
[INFO] [stdout]  --> src/from_str.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | default impl<T> Promptable for T
[INFO] [stdout]   | ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stdout]   = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "fb65dc003d73915ebf1e21ac1b6a13d8b95d6e40fdd09881757c7ab7bd68a42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb65dc003d73915ebf1e21ac1b6a13d8b95d6e40fdd09881757c7ab7bd68a42c", kill_on_drop: false }`
[INFO] [stdout] fb65dc003d73915ebf1e21ac1b6a13d8b95d6e40fdd09881757c7ab7bd68a42c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2a2df5803d357eb2282f406cad100f255cb190240ea15bbc098af2ace5cca51d
[INFO] running `Command { std: "docker" "start" "-a" "2a2df5803d357eb2282f406cad100f255cb190240ea15bbc098af2ace5cca51d", kill_on_drop: false }`
[INFO] [stderr] warning: specialization is experimental
[INFO] [stderr]  --> src/from_str.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | default impl<T> Promptable for T
[INFO] [stderr]   | ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]   = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stderr]   = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stderr] 
[INFO] [stderr] warning: `promptly` (lib) generated 1 warning
[INFO] [stderr] warning: `promptly` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/promptly-4e8d7c31f02c142b)
[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 promptly
[INFO] [stderr] warning: specialization is experimental
[INFO] [stderr]  --> src/from_str.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | default impl<T> Promptable for T
[INFO] [stderr]   | ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stderr]   = warning: unstable syntax can change at any point in the future, causing a hard error!
[INFO] [stderr]   = note: for more information, see issue #154045 <https://github.com/rust-lang/rust/issues/154045>
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - prompt (line 45) - compile ... ok
[INFO] [stdout] test src/lib.rs - prompt_default (line 103) - compile ... ok
[INFO] [stdout] test src/yes_no.rs - yes_no::bool::prompt (line 9) - compile ... ok
[INFO] [stdout] test src/from_str.rs - from_str::String::prompt_opt (line 65) - compile ... ok
[INFO] [stdout] test src/from_str.rs - from_str::String::prompt_default (line 76) - compile ... ok
[INFO] [stdout] test src/yes_no.rs - yes_no::bool::prompt_default (line 35) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 7) - compile ... ok
[INFO] [stdout] test src/yes_no.rs - yes_no::bool::prompt_opt (line 22) - compile ... ok
[INFO] [stdout] test src/lib.rs - prompt_opt (line 75) - compile ... ok
[INFO] [stdout] test src/from_str.rs - from_str::String::prompt (line 54) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a2df5803d357eb2282f406cad100f255cb190240ea15bbc098af2ace5cca51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a2df5803d357eb2282f406cad100f255cb190240ea15bbc098af2ace5cca51d", kill_on_drop: false }`
[INFO] [stdout] 2a2df5803d357eb2282f406cad100f255cb190240ea15bbc098af2ace5cca51d
