[INFO] fetching crate split_tokens 0.1.0...
[INFO] testing split_tokens-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate split_tokens 0.1.0 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate split_tokens 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate split_tokens 0.1.0
[INFO] finished tweaking crates.io crate split_tokens 0.1.0
[INFO] tweaked toml for crates.io crate split_tokens 0.1.0 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d74470eaabf98f01b6bbc994f843217987edfeb55481e86303519ed1da06e37
[INFO] running `Command { std: "docker" "start" "-a" "0d74470eaabf98f01b6bbc994f843217987edfeb55481e86303519ed1da06e37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d74470eaabf98f01b6bbc994f843217987edfeb55481e86303519ed1da06e37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d74470eaabf98f01b6bbc994f843217987edfeb55481e86303519ed1da06e37", kill_on_drop: false }`
[INFO] [stdout] 0d74470eaabf98f01b6bbc994f843217987edfeb55481e86303519ed1da06e37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01fdc1f583201cb3ac04fe38a39067ba35e66d6346a51a2fbf19fb3f5a220855
[INFO] running `Command { std: "docker" "start" "-a" "01fdc1f583201cb3ac04fe38a39067ba35e66d6346a51a2fbf19fb3f5a220855", kill_on_drop: false }`
[INFO] [stderr]    Compiling split_tokens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "01fdc1f583201cb3ac04fe38a39067ba35e66d6346a51a2fbf19fb3f5a220855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fdc1f583201cb3ac04fe38a39067ba35e66d6346a51a2fbf19fb3f5a220855", kill_on_drop: false }`
[INFO] [stdout] 01fdc1f583201cb3ac04fe38a39067ba35e66d6346a51a2fbf19fb3f5a220855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa0b65dfc1b714784442e37c38bd3611458089b4a666db19ab2e0d5743ef26c9
[INFO] running `Command { std: "docker" "start" "-a" "aa0b65dfc1b714784442e37c38bd3611458089b4a666db19ab2e0d5743ef26c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling split_tokens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] note: trace_macro
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     split_tokens!{(>>+=-=<<) then stringify!()};
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expanding `split_tokens! { (>> += -= <<) then stringify! () }`
[INFO] [stdout]    = note: to `split_tokens! (@ inner(>> += -= <<) () (stringify)) ;`
[INFO] [stdout]    = note: expanding `split_tokens! { @ inner(>> += -= <<) () (stringify) }`
[INFO] [stdout]    = note: to `split_tokens! (@ inner(+= -= <<) (> >) (stringify)) ;`
[INFO] [stdout]    = note: expanding `split_tokens! { @ inner(+= -= <<) (> >) (stringify) }`
[INFO] [stdout]    = note: to `split_tokens! (@ inner(-= <<) (> > + =) (stringify)) ;`
[INFO] [stdout]    = note: expanding `split_tokens! { @ inner(-= <<) (> > + =) (stringify) }`
[INFO] [stdout]    = note: to `split_tokens! (@ inner(<<) (> > + = - =) (stringify)) ;`
[INFO] [stdout]    = note: expanding `split_tokens! { @ inner(<<) (> > + = - =) (stringify) }`
[INFO] [stdout]    = note: to `split_tokens! (@ inner() (> > + = - = < <) (stringify)) ;`
[INFO] [stdout]    = note: expanding `split_tokens! { @ inner() (> > + = - = < <) (stringify) }`
[INFO] [stdout]    = note: to `stringify! (() (> > + = - = < <)) ;`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(trace_macros))]
[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 `split_tokens` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "aa0b65dfc1b714784442e37c38bd3611458089b4a666db19ab2e0d5743ef26c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa0b65dfc1b714784442e37c38bd3611458089b4a666db19ab2e0d5743ef26c9", kill_on_drop: false }`
[INFO] [stdout] aa0b65dfc1b714784442e37c38bd3611458089b4a666db19ab2e0d5743ef26c9