[INFO] fetching crate pycc-rs 0.0.4...
[INFO] testing pycc-rs-0.0.4 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate pycc-rs 0.0.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate pycc-rs 0.0.4
[INFO] finished tweaking crates.io crate pycc-rs 0.0.4
[INFO] tweaked toml for crates.io crate pycc-rs 0.0.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pycc-rs 0.0.4 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pycc-rs 0.0.4 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61cdf7a35da09ada5f515ddb7512e867df54b24a7c6b2384334e3356f4859068
[INFO] running `Command { std: "docker" "start" "-a" "61cdf7a35da09ada5f515ddb7512e867df54b24a7c6b2384334e3356f4859068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61cdf7a35da09ada5f515ddb7512e867df54b24a7c6b2384334e3356f4859068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61cdf7a35da09ada5f515ddb7512e867df54b24a7c6b2384334e3356f4859068", kill_on_drop: false }`
[INFO] [stdout] 61cdf7a35da09ada5f515ddb7512e867df54b24a7c6b2384334e3356f4859068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c0d9b8dc08bfca80a51b78ee08f24ca5923847c3ece3c1d0c0d22cbe8c99ed0
[INFO] running `Command { std: "docker" "start" "-a" "9c0d9b8dc08bfca80a51b78ee08f24ca5923847c3ece3c1d0c0d22cbe8c99ed0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling regex-lite v0.1.6
[INFO] [stderr]    Compiling libc v0.2.160
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling cc v1.1.30
[INFO] [stderr]    Compiling inkwell v0.5.0
[INFO] [stderr]    Compiling terl v0.0.3
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling clap_builder v4.5.20
[INFO] [stderr]    Compiling base32 v0.5.1
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling llvm-sys v180.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling inkwell_internals v0.10.0
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling clap v4.5.20
[INFO] [stderr]    Compiling py-lex v0.0.3
[INFO] [stderr]    Compiling py-ir v0.0.4
[INFO] [stderr]    Compiling py-codegen v0.0.4
[INFO] [stderr]    Compiling py-declare v0.0.4
[INFO] [stderr]    Compiling py-codegen-llvm v0.0.4
[INFO] [stderr]    Compiling py-codegen-c v0.0.4
[INFO] [stderr]    Compiling py-ast v0.0.4
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/py-ast-0.0.4/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] [stderr] error: could not compile `py-ast` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9c0d9b8dc08bfca80a51b78ee08f24ca5923847c3ece3c1d0c0d22cbe8c99ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c0d9b8dc08bfca80a51b78ee08f24ca5923847c3ece3c1d0c0d22cbe8c99ed0", kill_on_drop: false }`
[INFO] [stdout] 9c0d9b8dc08bfca80a51b78ee08f24ca5923847c3ece3c1d0c0d22cbe8c99ed0