[INFO] fetching crate interfacer-http-attribute 0.2.1...
[INFO] testing interfacer-http-attribute-0.2.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate interfacer-http-attribute 0.2.1 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate interfacer-http-attribute 0.2.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interfacer-http-attribute 0.2.1
[INFO] finished tweaking crates.io crate interfacer-http-attribute 0.2.1
[INFO] tweaked toml for crates.io crate interfacer-http-attribute 0.2.1 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48cc3cb8c0eb2e04d135c8bbc8ec66b94c84a45e090c8a340432f2f73a953e53
[INFO] running `Command { std: "docker" "start" "-a" "48cc3cb8c0eb2e04d135c8bbc8ec66b94c84a45e090c8a340432f2f73a953e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48cc3cb8c0eb2e04d135c8bbc8ec66b94c84a45e090c8a340432f2f73a953e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48cc3cb8c0eb2e04d135c8bbc8ec66b94c84a45e090c8a340432f2f73a953e53", kill_on_drop: false }`
[INFO] [stdout] 48cc3cb8c0eb2e04d135c8bbc8ec66b94c84a45e090c8a340432f2f73a953e53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef762080d2968ba793b9bb8d25f3d29dc0811421cf069a9eff411c8df0de42ad
[INFO] running `Command { std: "docker" "start" "-a" "ef762080d2968ba793b9bb8d25f3d29dc0811421cf069a9eff411c8df0de42ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling interfacer-http-attribute v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[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 `interfacer-http-attribute` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ef762080d2968ba793b9bb8d25f3d29dc0811421cf069a9eff411c8df0de42ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef762080d2968ba793b9bb8d25f3d29dc0811421cf069a9eff411c8df0de42ad", kill_on_drop: false }`
[INFO] [stdout] ef762080d2968ba793b9bb8d25f3d29dc0811421cf069a9eff411c8df0de42ad