[INFO] fetching crate rstb 0.3.2...
[INFO] testing rstb-0.3.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate rstb 0.3.2 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate rstb 0.3.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rstb 0.3.2
[INFO] finished tweaking crates.io crate rstb 0.3.2
[INFO] tweaked toml for crates.io crate rstb 0.3.2 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded all_asserts v2.3.1
[INFO] [stderr]   Downloaded yaz0 v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d46ad3a87e55cc3b01f57e40733a9d4f5399d84637b24e6cef96ab0bef8cd59
[INFO] running `Command { std: "docker" "start" "-a" "2d46ad3a87e55cc3b01f57e40733a9d4f5399d84637b24e6cef96ab0bef8cd59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d46ad3a87e55cc3b01f57e40733a9d4f5399d84637b24e6cef96ab0bef8cd59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d46ad3a87e55cc3b01f57e40733a9d4f5399d84637b24e6cef96ab0bef8cd59", kill_on_drop: false }`
[INFO] [stdout] 2d46ad3a87e55cc3b01f57e40733a9d4f5399d84637b24e6cef96ab0bef8cd59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7abc3156bf530356f6b360e81b92523a12cb065def70decac947f5fd7dd84b17
[INFO] running `Command { std: "docker" "start" "-a" "7abc3156bf530356f6b360e81b92523a12cb065def70decac947f5fd7dd84b17", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling crc v2.1.0
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling rstb v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rstb` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7abc3156bf530356f6b360e81b92523a12cb065def70decac947f5fd7dd84b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7abc3156bf530356f6b360e81b92523a12cb065def70decac947f5fd7dd84b17", kill_on_drop: false }`
[INFO] [stdout] 7abc3156bf530356f6b360e81b92523a12cb065def70decac947f5fd7dd84b17