[INFO] fetching crate flowfairy_api 0.2.2...
[INFO] testing flowfairy_api-0.2.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate flowfairy_api 0.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate flowfairy_api 0.2.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowfairy_api 0.2.2
[INFO] finished tweaking crates.io crate flowfairy_api 0.2.2
[INFO] tweaked toml for crates.io crate flowfairy_api 0.2.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e2e8532535b03d0213f4f37d3737f86d0aa6fa95eb5c64e7ac86e51b7e78c92
[INFO] running `Command { std: "docker" "start" "-a" "8e2e8532535b03d0213f4f37d3737f86d0aa6fa95eb5c64e7ac86e51b7e78c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e2e8532535b03d0213f4f37d3737f86d0aa6fa95eb5c64e7ac86e51b7e78c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2e8532535b03d0213f4f37d3737f86d0aa6fa95eb5c64e7ac86e51b7e78c92", kill_on_drop: false }`
[INFO] [stdout] 8e2e8532535b03d0213f4f37d3737f86d0aa6fa95eb5c64e7ac86e51b7e78c92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0718198b52c278208bc1ee9ecc7dde368bc81874770c14ae6f737ef0766ace8b
[INFO] running `Command { std: "docker" "start" "-a" "0718198b52c278208bc1ee9ecc7dde368bc81874770c14ae6f737ef0766ace8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling flowfairy_api v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | #![feature(byte_slice_trim_ascii)]
[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 `flowfairy_api` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0718198b52c278208bc1ee9ecc7dde368bc81874770c14ae6f737ef0766ace8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0718198b52c278208bc1ee9ecc7dde368bc81874770c14ae6f737ef0766ace8b", kill_on_drop: false }`
[INFO] [stdout] 0718198b52c278208bc1ee9ecc7dde368bc81874770c14ae6f737ef0766ace8b
