[INFO] fetching crate py-ast 0.0.4...
[INFO] checking py-ast-0.0.4 against master#86a49fd71fecd25b0fd20247db0ba95eeceaba28 for pr-129543-2
[INFO] extracting crate py-ast 0.0.4 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate py-ast 0.0.4
[INFO] finished tweaking crates.io crate py-ast 0.0.4
[INFO] tweaked toml for crates.io crate py-ast 0.0.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate py-ast 0.0.4 on toolchain 86a49fd71fecd25b0fd20247db0ba95eeceaba28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "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" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding terl v0.0.3 (available: v0.0.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded py-lex v0.0.3
[INFO] [stderr]   Downloaded py-declare v0.0.4
[INFO] [stderr]   Downloaded py-ir v0.0.4
[INFO] [stderr]   Downloaded terl v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9939a328151a99f69b9c7f6d42782c4238d5870b9a7d9564b5014f3b054279e
[INFO] running `Command { std: "docker" "start" "-a" "a9939a328151a99f69b9c7f6d42782c4238d5870b9a7d9564b5014f3b054279e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9939a328151a99f69b9c7f6d42782c4238d5870b9a7d9564b5014f3b054279e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9939a328151a99f69b9c7f6d42782c4238d5870b9a7d9564b5014f3b054279e", kill_on_drop: false }`
[INFO] [stdout] a9939a328151a99f69b9c7f6d42782c4238d5870b9a7d9564b5014f3b054279e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30b86d0bbc01959fe449c815994a0927d0a4308a87c112aa66ff8e4afb396f41
[INFO] running `Command { std: "docker" "start" "-a" "30b86d0bbc01959fe449c815994a0927d0a4308a87c112aa66ff8e4afb396f41", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]     Checking colored v2.2.0
[INFO] [stderr]     Checking terl v0.0.3
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking py-lex v0.0.3
[INFO] [stderr]     Checking py-ir v0.0.4
[INFO] [stderr]     Checking py-declare v0.0.4
[INFO] [stderr]     Checking py-ast v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parse/expr.rs:300:28
[INFO] [stdout]     |
[INFO] [stdout] 300 |                         && let Some(rb) = p.r#match(RPU(Operators::BracketR)).apply(mapper::Try)?
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/parse/expr.rs:300:28
[INFO] [stdout]     |
[INFO] [stdout] 300 |                         && let Some(rb) = p.r#match(RPU(Operators::BracketR)).apply(mapper::Try)?
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[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/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `py-ast` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `py-ast` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "30b86d0bbc01959fe449c815994a0927d0a4308a87c112aa66ff8e4afb396f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30b86d0bbc01959fe449c815994a0927d0a4308a87c112aa66ff8e4afb396f41", kill_on_drop: false }`
[INFO] [stdout] 30b86d0bbc01959fe449c815994a0927d0a4308a87c112aa66ff8e4afb396f41