[INFO] crate tsukuyomi-macros 0.5.2 is already in cache
[INFO] testing tsukuyomi-macros-0.5.2 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate tsukuyomi-macros 0.5.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tsukuyomi-macros 0.5.2 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tsukuyomi-macros 0.5.2
[INFO] finished tweaking crates.io crate tsukuyomi-macros 0.5.2
[INFO] tweaked toml for crates.io crate tsukuyomi-macros 0.5.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ad9ca9cf571b7146e7db1c9f67809371b7f2c12360341450aa95f6a627fceaf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2ad9ca9cf571b7146e7db1c9f67809371b7f2c12360341450aa95f6a627fceaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad9ca9cf571b7146e7db1c9f67809371b7f2c12360341450aa95f6a627fceaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad9ca9cf571b7146e7db1c9f67809371b7f2c12360341450aa95f6a627fceaf", kill_on_drop: false }`
[INFO] [stdout] 2ad9ca9cf571b7146e7db1c9f67809371b7f2c12360341450aa95f6a627fceaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 743a04377c9cf92859c7133dd72cc70eac451dd164621fd740681f0c226e03aa
[INFO] running `Command { std: "docker" "start" "-a" "743a04377c9cf92859c7133dd72cc70eac451dd164621fd740681f0c226e03aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling tsukuyomi-macros v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `tsukuyomi-macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error: unused extern crate
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate proc_macro;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:4:71
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(nonstandard_style, rust_2018_idioms, rust_2018_compatibility, unused)]
[INFO] [stdout]   |                                                                       ^^^^^^
[INFO] [stdout]   = note: `#[deny(unused_extern_crates)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "743a04377c9cf92859c7133dd72cc70eac451dd164621fd740681f0c226e03aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743a04377c9cf92859c7133dd72cc70eac451dd164621fd740681f0c226e03aa", kill_on_drop: false }`
[INFO] [stdout] 743a04377c9cf92859c7133dd72cc70eac451dd164621fd740681f0c226e03aa