[INFO] fetching crate sbse 0.0.3...
[INFO] testing sbse-0.0.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate sbse 0.0.3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sbse 0.0.3
[INFO] finished tweaking crates.io crate sbse 0.0.3
[INFO] tweaked toml for crates.io crate sbse 0.0.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sbse 0.0.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c_a_l v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b47c5286efb62fa110e84479d65a5c8903b7440350faf05a2214b1a9e725103
[INFO] running `Command { std: "docker" "start" "-a" "5b47c5286efb62fa110e84479d65a5c8903b7440350faf05a2214b1a9e725103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b47c5286efb62fa110e84479d65a5c8903b7440350faf05a2214b1a9e725103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b47c5286efb62fa110e84479d65a5c8903b7440350faf05a2214b1a9e725103", kill_on_drop: false }`
[INFO] [stdout] 5b47c5286efb62fa110e84479d65a5c8903b7440350faf05a2214b1a9e725103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee11adde64fe545558f23a79f29611a7726bb0c428f5e99295882894a211975e
[INFO] running `Command { std: "docker" "start" "-a" "ee11adde64fe545558f23a79f29611a7726bb0c428f5e99295882894a211975e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling sbse v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling c_a_l v0.1.4
[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/c_a_l-0.1.4/src/p.rs:384:11
[INFO] [stdout]     |
[INFO] [stdout] 384 |     while let Some(c) = t.peek()
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:400:11
[INFO] [stdout]     |
[INFO] [stdout] 400 |     while let Some(x) = t.peek()
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:428:11
[INFO] [stdout]     |
[INFO] [stdout] 428 |     while let Some(x) = t.peek()
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:480:19
[INFO] [stdout]     |
[INFO] [stdout] 480 |             while let Some(x) = t.peek()
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:647:11
[INFO] [stdout]     |
[INFO] [stdout] 647 |     while let Some(x) = t.peek()
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:775:12
[INFO] [stdout]     |
[INFO] [stdout] 775 |         if let Some('?') = t.peek_next()
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/c_a_l-0.1.4/src/p.rs:787:16
[INFO] [stdout]     |
[INFO] [stdout] 787 |             if let Some(p) = t.last_n(2)
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/c_a_l-0.1.4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[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] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/c_a_l-0.1.4/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ascii_char)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c_a_l` (lib) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "ee11adde64fe545558f23a79f29611a7726bb0c428f5e99295882894a211975e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee11adde64fe545558f23a79f29611a7726bb0c428f5e99295882894a211975e", kill_on_drop: false }`
[INFO] [stdout] ee11adde64fe545558f23a79f29611a7726bb0c428f5e99295882894a211975e