[INFO] fetching crate tacky-borders-logger 0.1.0...
[INFO] testing tacky-borders-logger-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate tacky-borders-logger 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate tacky-borders-logger 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tacky-borders-logger 0.1.0
[INFO] tweaked toml for crates.io crate tacky-borders-logger 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tacky-borders-logger 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tacky-borders-logger 0.1.0 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sp_log2 v0.1.3
[INFO] [stderr]   Downloaded termcolor2 v0.1.1
[INFO] [stderr]   Downloaded unicode-ident v1.0.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04a00313902f27bd2c24fcbd129d4e9f584490914f5ad9b39936949dee95de99
[INFO] running `Command { std: "docker" "start" "-a" "04a00313902f27bd2c24fcbd129d4e9f584490914f5ad9b39936949dee95de99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04a00313902f27bd2c24fcbd129d4e9f584490914f5ad9b39936949dee95de99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04a00313902f27bd2c24fcbd129d4e9f584490914f5ad9b39936949dee95de99", kill_on_drop: false }`
[INFO] [stdout] 04a00313902f27bd2c24fcbd129d4e9f584490914f5ad9b39936949dee95de99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eefec6a3fe8b093e5365235b6fa927892af3f02abcebcb5e2ea9fadf417043e8
[INFO] running `Command { std: "docker" "start" "-a" "eefec6a3fe8b093e5365235b6fa927892af3f02abcebcb5e2ea9fadf417043e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling tacky-borders-logger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "eefec6a3fe8b093e5365235b6fa927892af3f02abcebcb5e2ea9fadf417043e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eefec6a3fe8b093e5365235b6fa927892af3f02abcebcb5e2ea9fadf417043e8", kill_on_drop: false }`
[INFO] [stdout] eefec6a3fe8b093e5365235b6fa927892af3f02abcebcb5e2ea9fadf417043e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75f60321ac847310d71bad51c012bb0aaa7a6a7d47880d0ea54a66c1d48c72fc
[INFO] running `Command { std: "docker" "start" "-a" "75f60321ac847310d71bad51c012bb0aaa7a6a7d47880d0ea54a66c1d48c72fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.15
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling termcolor2 v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling tacky-borders-logger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling sp_log2 v0.1.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/vec_log.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_push_within_capacity)]
[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 `tacky-borders-logger` (example "vec_log") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "75f60321ac847310d71bad51c012bb0aaa7a6a7d47880d0ea54a66c1d48c72fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f60321ac847310d71bad51c012bb0aaa7a6a7d47880d0ea54a66c1d48c72fc", kill_on_drop: false }`
[INFO] [stdout] 75f60321ac847310d71bad51c012bb0aaa7a6a7d47880d0ea54a66c1d48c72fc