[INFO] fetching crate trait_tests 0.3.3...
[INFO] testing trait_tests-0.3.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate trait_tests 0.3.3 into /workspace/builds/worker-78/source
[INFO] validating manifest of crates.io crate trait_tests 0.3.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trait_tests 0.3.3
[INFO] finished tweaking crates.io crate trait_tests 0.3.3
[INFO] tweaked toml for crates.io crate trait_tests 0.3.3 written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: library `trait_tests` should only specify `proc-macro = true` instead of setting `crate-type`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01075d51492ba899d9ccd3581369015841fd5d6ddee55f6d4d31b5e912e29a6a
[INFO] running `Command { std: "docker" "start" "-a" "01075d51492ba899d9ccd3581369015841fd5d6ddee55f6d4d31b5e912e29a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01075d51492ba899d9ccd3581369015841fd5d6ddee55f6d4d31b5e912e29a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01075d51492ba899d9ccd3581369015841fd5d6ddee55f6d4d31b5e912e29a6a", kill_on_drop: false }`
[INFO] [stdout] 01075d51492ba899d9ccd3581369015841fd5d6ddee55f6d4d31b5e912e29a6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ae2f542d3c2cbb6ef6a8fc60ec3c954fc3479024065f86a3f4c9688cb01aebd
[INFO] running `Command { std: "docker" "start" "-a" "1ae2f542d3c2cbb6ef6a8fc60ec3c954fc3479024065f86a3f4c9688cb01aebd", kill_on_drop: false }`
[INFO] [stderr] warning: library `trait_tests` should only specify `proc-macro = true` instead of setting `crate-type`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling trait_tests v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)] //proc_macro_lib
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[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 `trait_tests` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1ae2f542d3c2cbb6ef6a8fc60ec3c954fc3479024065f86a3f4c9688cb01aebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ae2f542d3c2cbb6ef6a8fc60ec3c954fc3479024065f86a3f4c9688cb01aebd", kill_on_drop: false }`
[INFO] [stdout] 1ae2f542d3c2cbb6ef6a8fc60ec3c954fc3479024065f86a3f4c9688cb01aebd