[INFO] fetching crate def-mod 0.5.0...
[INFO] testing def-mod-0.5.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate def-mod 0.5.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate def-mod 0.5.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate def-mod 0.5.0
[INFO] finished tweaking crates.io crate def-mod 0.5.0
[INFO] tweaked toml for crates.io crate def-mod 0.5.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate def-mod 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ac1e9cd51a95cc5a37c6c37bed78436409b0a0673020d2d6a2858e406f14eb7
[INFO] running `Command { std: "docker" "start" "-a" "4ac1e9cd51a95cc5a37c6c37bed78436409b0a0673020d2d6a2858e406f14eb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ac1e9cd51a95cc5a37c6c37bed78436409b0a0673020d2d6a2858e406f14eb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ac1e9cd51a95cc5a37c6c37bed78436409b0a0673020d2d6a2858e406f14eb7", kill_on_drop: false }`
[INFO] [stdout] 4ac1e9cd51a95cc5a37c6c37bed78436409b0a0673020d2d6a2858e406f14eb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9de50b7c4637d224fb82e0bda4ba2f74c2306705b187b228935eba0ad1e33816
[INFO] running `Command { std: "docker" "start" "-a" "9de50b7c4637d224fb82e0bda4ba2f74c2306705b187b228935eba0ad1e33816", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling def-mod v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:178:1
[INFO] [stdout]     |
[INFO] [stdout] 178 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:181:1
[INFO] [stdout]     |
[INFO] [stdout] 181 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:184:1
[INFO] [stdout]     |
[INFO] [stdout] 184 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:187:1
[INFO] [stdout]     |
[INFO] [stdout] 187 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:176:12
[INFO] [stdout]     |
[INFO] [stdout] 176 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `def-mod` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9de50b7c4637d224fb82e0bda4ba2f74c2306705b187b228935eba0ad1e33816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de50b7c4637d224fb82e0bda4ba2f74c2306705b187b228935eba0ad1e33816", kill_on_drop: false }`
[INFO] [stdout] 9de50b7c4637d224fb82e0bda4ba2f74c2306705b187b228935eba0ad1e33816