[INFO] fetching crate modus_ponens_derive 0.1.3...
[INFO] testing modus_ponens_derive-0.1.3 against 1.69.0 for beta-1.70-1
[INFO] extracting crate modus_ponens_derive 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate modus_ponens_derive 0.1.3 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate modus_ponens_derive 0.1.3
[INFO] finished tweaking crates.io crate modus_ponens_derive 0.1.3
[INFO] tweaked toml for crates.io crate modus_ponens_derive 0.1.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded modus_ponens v0.11.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d9541dc716e2e989fea1df3e856aec589ef28c72f51cbdd6bc872d9146e03f5
[INFO] running `Command { std: "docker" "start" "-a" "5d9541dc716e2e989fea1df3e856aec589ef28c72f51cbdd6bc872d9146e03f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d9541dc716e2e989fea1df3e856aec589ef28c72f51cbdd6bc872d9146e03f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d9541dc716e2e989fea1df3e856aec589ef28c72f51cbdd6bc872d9146e03f5", kill_on_drop: false }`
[INFO] [stdout] 5d9541dc716e2e989fea1df3e856aec589ef28c72f51cbdd6bc872d9146e03f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ddc3a79755f4f879592a2d86c674641df14c6c00bb28e9fa2463c3a99fecadf
[INFO] running `Command { std: "docker" "start" "-a" "1ddc3a79755f4f879592a2d86c674641df14c6c00bb28e9fa2463c3a99fecadf", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling pest v2.6.0
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling pest_meta v2.6.0
[INFO] [stderr]    Compiling regex v1.8.1
[INFO] [stderr]    Compiling pest_generator v2.6.0
[INFO] [stderr]    Compiling pest_derive v2.6.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling modus_ponens v0.11.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/modus_ponens-0.11.5/src/lib.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | #![feature(hash_set_entry)]
[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 `modus_ponens` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1ddc3a79755f4f879592a2d86c674641df14c6c00bb28e9fa2463c3a99fecadf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ddc3a79755f4f879592a2d86c674641df14c6c00bb28e9fa2463c3a99fecadf", kill_on_drop: false }`
[INFO] [stdout] 1ddc3a79755f4f879592a2d86c674641df14c6c00bb28e9fa2463c3a99fecadf
