[INFO] fetching crate just-shell 0.1.2...
[INFO] testing just-shell-0.1.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate just-shell 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate just-shell 0.1.2
[INFO] finished tweaking crates.io crate just-shell 0.1.2
[INFO] tweaked toml for crates.io crate just-shell 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate just-shell 0.1.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate just-shell 0.1.2 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f2a577e5af1a6e366520ee6a761299e3a74c45743b3ca2eea682bd00de657f0
[INFO] running `Command { std: "docker" "start" "-a" "3f2a577e5af1a6e366520ee6a761299e3a74c45743b3ca2eea682bd00de657f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f2a577e5af1a6e366520ee6a761299e3a74c45743b3ca2eea682bd00de657f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f2a577e5af1a6e366520ee6a761299e3a74c45743b3ca2eea682bd00de657f0", kill_on_drop: false }`
[INFO] [stdout] 3f2a577e5af1a6e366520ee6a761299e3a74c45743b3ca2eea682bd00de657f0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e02b5209201fa62cdeb6968d8892bc6d85c7210a72ac098bde81539d1a3e3019
[INFO] running `Command { std: "docker" "start" "-a" "e02b5209201fa62cdeb6968d8892bc6d85c7210a72ac098bde81539d1a3e3019", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling colored v2.1.0
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling nix v0.27.1
[INFO] [stderr]    Compiling termion v3.0.0
[INFO] [stderr]    Compiling fd-lock v4.0.2
[INFO] [stderr]    Compiling ctrlc v3.4.2
[INFO] [stderr]    Compiling rustyline-derive v0.10.0
[INFO] [stderr]    Compiling rustyline v13.0.0
[INFO] [stderr]    Compiling just-shell v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/main.rs:189:12
[INFO] [stdout]     |
[INFO] [stdout] 189 |         if let Some((line, _deps)) = line.split_once(':')
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(let_chains, ascii_char)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(let_chains, ascii_char)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `just-shell` (bin "just-shell") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e02b5209201fa62cdeb6968d8892bc6d85c7210a72ac098bde81539d1a3e3019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e02b5209201fa62cdeb6968d8892bc6d85c7210a72ac098bde81539d1a3e3019", kill_on_drop: false }`
[INFO] [stdout] e02b5209201fa62cdeb6968d8892bc6d85c7210a72ac098bde81539d1a3e3019