[INFO] fetching crate laby 0.4.1...
[INFO] testing laby-0.4.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate laby 0.4.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate laby 0.4.1
[INFO] finished tweaking crates.io crate laby 0.4.1
[INFO] tweaked toml for crates.io crate laby 0.4.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate laby 0.4.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716
[INFO] running `Command { std: "docker" "start" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoap v1.0.1
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling laby_common v0.2.0
[INFO] [stderr]    Compiling laby_macros v0.3.0
[INFO] [stderr]    Compiling laby v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling laby v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/build/laby/a7251af1c014503a/out/laby-a7251af1c014503a)
[INFO] [stderr]      Running tests/attributes.rs (/opt/rustwide/target/release/build/laby/e4b0728ed3a49666/out/attributes-e4b0728ed3a49666)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test children_first ... ok
[INFO] [stdout] test attr_first ... ok
[INFO] [stdout] test duplicates ... ok
[INFO] [stdout] test variable_both ... ok
[INFO] [stdout] test variable_value ... ok
[INFO] [stdout] test variable_name ... ok
[INFO] [stdout] test variable_what ... ok
[INFO] [stdout] test mixed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/boolean.rs (/opt/rustwide/target/release/build/laby/5182a2f0aad30d80/out/boolean-5182a2f0aad30d80)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test weird ... ok
[INFO] [stdout] test variable ... ok
[INFO] [stdout] test disabled ... ok
[INFO] [stderr]      Running tests/classes.rs (/opt/rustwide/target/release/build/laby/0e3fd7087b0342e8/out/classes-0e3fd7087b0342e8)
[INFO] [stdout] test enabled ... ok
[INFO] [stdout] test none ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test only_exprs ... ok
[INFO] [stdout] test only_lits ... ok
[INFO] [stdout] test escape ... ok
[INFO] [stdout] test mixed ... ok
[INFO] [stdout] test nones ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/complex.rs (/opt/rustwide/target/release/build/laby/04eeac9a5afa9a0a/out/complex-04eeac9a5afa9a0a)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test argument ... ok
[INFO] [stdout] test types ... ok
[INFO] [stdout] test nesting ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/component.rs (/opt/rustwide/target/release/build/laby/eb92f8d76e37a5a0/out/component-eb92f8d76e37a5a0)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test modules ... ok
[INFO] [stdout] test default_args_generic ... ok
[INFO] [stdout] test rest ... ok
[INFO] [stderr]      Running tests/disp.rs (/opt/rustwide/target/release/build/laby/1448338112d41356/out/disp-1448338112d41356)
[INFO] [stdout] test default_args ... ok
[INFO] [stdout] test default_args_render ... ok
[INFO] [stdout] test args ... ok
[INFO] [stdout] test difficult_args ... ok
[INFO] [stdout] test duplicates ... ok
[INFO] [stdout] test direct_call ... ok
[INFO] [stdout] test simple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test escape ... ok
[INFO] [stdout] test normal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/elements.rs (/opt/rustwide/target/release/build/laby/332688d7840ef587/out/elements-332688d7840ef587)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running tests/escape.rs (/opt/rustwide/target/release/build/laby/808256fb65d0132d/out/escape-808256fb65d0132d)
[INFO] [stdout] test void_nested ... ok
[INFO] [stdout] test void ... ok
[INFO] [stdout] test normal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test all ... ok
[INFO] [stdout] test raw_child ... ok
[INFO] [stdout] test raw_attr_name ... ok
[INFO] [stdout] test attr_name ... ok
[INFO] [stdout] test child ... ok
[INFO] [stdout] test unicode ... ok
[INFO] [stdout] test raw_attr ... ok
[INFO] [stdout] test attr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/flatten.rs (/opt/rustwide/target/release/build/laby/11d8eb9736bd4fd2/out/flatten-11d8eb9736bd4fd2)
[INFO] [stderr]      Running tests/frag.rs (/opt/rustwide/target/release/build/laby/eb49aaab2a1d2102/out/frag-eb49aaab2a1d2102)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test flattened ... ok
[INFO] [stdout] test non_flattened ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test multi2 ... ok
[INFO] [stdout] test none ... ok
[INFO] [stdout] test none2 ... ok
[INFO] [stdout] test multi ... ok
[INFO] [stdout] test types ... ok
[INFO] [stdout] test single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/frag_match.rs (/opt/rustwide/target/release/build/laby/94daa601e0faaf82/out/frag_match-94daa601e0faaf82)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test simple_if ... ok
[INFO] [stdout] test simple_match ... ok
[INFO] [stdout] test advanced_if ... ok
[INFO] [stdout] test advanced_match ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/iter.rs (/opt/rustwide/target/release/build/laby/a1700fb08dec8625/out/iter-a1700fb08dec8625)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test none ... ok
[INFO] [stdout] test many ... ok
[INFO] [stdout] test one ... ok
[INFO] [stdout] test complex ... ok
[INFO] [stdout] test lines ... ok
[INFO] [stdout] test custom ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/literal.rs (/opt/rustwide/target/release/build/laby/dfe3cf3951fc6a91/out/literal-dfe3cf3951fc6a91)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test int_large ... ok
[INFO] [stdout] test float_epsilon ... ok
[INFO] [stdout] test hex ... ok
[INFO] [stdout] test float_large ... ok
[INFO] [stdout] test raw_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/render.rs (/opt/rustwide/target/release/build/laby/7b75208dcf84ba78/out/render-7b75208dcf84ba78)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test multiple ... ok
[INFO] [stderr]    Doc-tests laby
[INFO] [stdout] test none ... ok
[INFO] [stdout] test single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 41 tests
[INFO] [stdout] test src/helpers.rs - helpers::disp (line 481) ... ignored
[INFO] [stdout] test src/helpers.rs - helpers::iter (line 255) ... ignored
[INFO] [stdout] test src/helpers.rs - helpers::iter_lines (line 318) ... ignored
[INFO] [stdout] test src/helpers.rs - helpers::raw (line 404) ... ignored
[INFO] [stdout] test src/helpers.rs - helpers::render (line 62) ... ignored
[INFO] [stdout] test src/lib.rs - (line 125) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::iter (line 288) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::raw (line 421) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::render (line 129) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::render (line 107) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::render (line 116) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::iter_lines (line 327) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::render (line 91) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::disp (line 493) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::RenderRaw (line 354) ... ok
[INFO] [stdout] test src/lib.rs - frag_match (line 719) ... ignored
[INFO] [stdout] test src/helpers.rs - helpers::iter (line 276) ... ok
[INFO] [stdout] test src/doctype.rs - doctype::DocType (line 18) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::bool (line 33) ... ok
[INFO] [stdout] test src/lib.rs - (line 249) ... ok
[INFO] [stdout] test src/lib.rs - frag_match (line 737) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 101) ... ok
[INFO] [stdout] test src/lib.rs - (line 145) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 456) ... ok
[INFO] [stdout] test src/helpers.rs - helpers::render (line 80) ... ok
[INFO] [stdout] test src/lib.rs - frag (line 694) ... ok
[INFO] [stdout] test src/lib.rs - (line 296) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 559) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 191) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 616) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - classes (line 776) ... ok
[INFO] [stdout] test src/lib.rs - (line 351) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 538) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - laby (line 648) ... FAILED
[INFO] [stdout] test src/lib.rs - laby (line 477) ... ok
[INFO] [stdout] test src/lib.rs - frag (line 678) ... ok
[INFO] [stdout] test src/lib.rs - (line 61) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 494) ... ok
[INFO] [stdout] test src/lib.rs - laby (line 590) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - laby (line 514) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - frag_match (line 737) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `!: Render` is not satisfied
[INFO] [stdout]    --> src/lib.rs:751:23
[INFO] [stdout]     |
[INFO] [stdout] 751 | let s = render!(iter!(vec));
[INFO] [stdout]     |                 ------^^^-
[INFO] [stdout]     |                 |     |
[INFO] [stdout]     |                 |     the trait `Render` is not implemented for `!`
[INFO] [stdout]     |                 required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Render`:
[INFO] [stdout]               &str
[INFO] [stdout]               ()
[INFO] [stdout]               Arguments<'a>
[INFO] [stdout]               Cow<'a, R>
[INFO] [stdout]               DocType
[INFO] [stdout]               NonZero<i128>
[INFO] [stdout]               NonZero<i16>
[INFO] [stdout]               NonZero<i32>
[INFO] [stdout]             and 35 others
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Option<!>` to implement `Render`
[INFO] [stdout]     = note: 1 redundant requirement hidden
[INFO] [stdout]     = note: required for `_frag<Option<_div>, Option<_span>, Option<_img>, Option<!>>` to implement `Render`
[INFO] [stdout] note: required by a bound in `RenderIterator`
[INFO] [stdout]    --> src/helpers.rs:169:14
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub struct RenderIterator<I>(
[INFO] [stdout] ...
[INFO] [stdout] 169 |     I::Item: Render;
[INFO] [stdout]     |              ^^^^^^ required by this bound in `RenderIterator`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `!: Render` is not satisfied
[INFO] [stdout]    --> src/lib.rs:751:17
[INFO] [stdout]     |
[INFO] [stdout] 751 | let s = render!(iter!(vec));
[INFO] [stdout]     |         --------^^^^^^^^^^-
[INFO] [stdout]     |         |       |
[INFO] [stdout]     |         |       the trait `Render` is not implemented for `!`
[INFO] [stdout]     |         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Render`:
[INFO] [stdout]               &str
[INFO] [stdout]               ()
[INFO] [stdout]               Arguments<'a>
[INFO] [stdout]               Cow<'a, R>
[INFO] [stdout]               DocType
[INFO] [stdout]               NonZero<i128>
[INFO] [stdout]               NonZero<i16>
[INFO] [stdout]               NonZero<i32>
[INFO] [stdout]             and 35 others
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #148922 <https://github.com/rust-lang/rust/issues/148922> for more information)
[INFO] [stdout]     = help: you might have intended to use the type `()` here instead
[INFO] [stdout]     = note: required for `Option<!>` to implement `Render`
[INFO] [stdout]     = note: 2 redundant requirements hidden
[INFO] [stdout]     = note: required for `RenderIterator<Vec<_frag<Option<_div>, Option<_span>, Option<_img>, Option<!>>>>` to implement `Render`
[INFO] [stdout]     = note: this error originates in the macro `iter` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - laby (line 648) stdout ----
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:648:1
[INFO] [stdout]     |
[INFO] [stdout] 648 | #![feature(decl_macro)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - frag_match (line 737)
[INFO] [stdout]     src/lib.rs - laby (line 648)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 33 passed; 2 failed; 6 ignored; 0 measured; 0 filtered out; finished in 1.20s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716", kill_on_drop: false }`
[INFO] [stdout] 7fd28a39cf5251ac1136ae11324471cae87fcda2060a8300593e322fc33b4716
