[INFO] fetching crate cfg 0.5.0...
[INFO] testing cfg-0.5.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate cfg 0.5.0 into /workspace/builds/worker-60/source
[INFO] validating manifest of crates.io crate cfg 0.5.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cfg 0.5.0
[INFO] finished tweaking crates.io crate cfg 0.5.0
[INFO] tweaked toml for crates.io crate cfg 0.5.0 written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-2022-04-10" "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-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ff8860115b83e6fa94c00f72ec256ab33d2c2b32984fe294155a6b87fc35a23
[INFO] running `Command { std: "docker" "start" "-a" "6ff8860115b83e6fa94c00f72ec256ab33d2c2b32984fe294155a6b87fc35a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ff8860115b83e6fa94c00f72ec256ab33d2c2b32984fe294155a6b87fc35a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ff8860115b83e6fa94c00f72ec256ab33d2c2b32984fe294155a6b87fc35a23", kill_on_drop: false }`
[INFO] [stdout] 6ff8860115b83e6fa94c00f72ec256ab33d2c2b32984fe294155a6b87fc35a23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8ab43f2a53eea666bbb64f041d99d96f96bf048c7ae84bc86850e52b1acbca9
[INFO] running `Command { std: "docker" "start" "-a" "d8ab43f2a53eea666bbb64f041d99d96f96bf048c7ae84bc86850e52b1acbca9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling optional v0.5.0
[INFO] [stderr]    Compiling bit-matrix v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling cfg v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/symbol/source.rs:48:34
[INFO] [stdout]     |
[INFO] [stdout] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout]     |                                    ^                 ^
[INFO] [stdout] ...
[INFO] [stdout] 60  |   impl_generate!(
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 107 | | );
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/remap.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         mem::replace(self.grammar.sym_source_mut(), intern.source);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.00s
[INFO] running `Command { std: "docker" "inspect" "d8ab43f2a53eea666bbb64f041d99d96f96bf048c7ae84bc86850e52b1acbca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ab43f2a53eea666bbb64f041d99d96f96bf048c7ae84bc86850e52b1acbca9", kill_on_drop: false }`
[INFO] [stdout] d8ab43f2a53eea666bbb64f041d99d96f96bf048c7ae84bc86850e52b1acbca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5262f0af879977a87a0d1960862a8fb1c79b3a16c29e9535ece66e7a9ed98e78
[INFO] running `Command { std: "docker" "start" "-a" "5262f0af879977a87a0d1960862a8fb1c79b3a16c29e9535ece66e7a9ed98e78", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/symbol/source.rs:48:34
[INFO] [stdout]     |
[INFO] [stdout] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout]     |                                    ^                 ^
[INFO] [stdout] ...
[INFO] [stdout] 60  |   impl_generate!(
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 107 | | );
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/remap.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         mem::replace(self.grammar.sym_source_mut(), intern.source);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/symbol/source.rs:48:34
[INFO] [stdout]     |
[INFO] [stdout] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout]     |                                    ^                 ^
[INFO] [stdout] ...
[INFO] [stdout] 60  |   impl_generate!(
[INFO] [stdout]     |  _-
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |
[INFO] [stdout] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stdout] 107 | | );
[INFO] [stdout]     | | -
[INFO] [stdout]     | |_|
[INFO] [stdout]     | |_in this macro invocation
[INFO] [stdout]     |   in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:13:24
[INFO] [stdout]     |
[INFO] [stdout] 13  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_parens)]` implied by `#[warn(warnings)]`
[INFO] [stdout]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stdout] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/remap.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         mem::replace(self.grammar.sym_source_mut(), intern.source);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` implied by `#[warn(warnings)]`
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.89s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/cfg-a0ee40b5e4ad9bda)
[INFO] [stderr]   Executable tests/test_binarize.rs (/opt/rustwide/target/debug/deps/test_binarize-eea2df25570578f9)
[INFO] [stderr]   Executable tests/test_classification.rs (/opt/rustwide/target/debug/deps/test_classification-c24e8d18c879fcd0)
[INFO] [stderr]   Executable tests/test_cycles.rs (/opt/rustwide/target/debug/deps/test_cycles-5a565c1d53fbf6dd)
[INFO] [stderr]   Executable tests/test_first_sets.rs (/opt/rustwide/target/debug/deps/test_first_sets-93715b3a36ab7589)
[INFO] [stderr]   Executable tests/test_last_sets.rs (/opt/rustwide/target/debug/deps/test_last_sets-f0780d944f84f752)
[INFO] [stderr]   Executable tests/test_minimum_distance.rs (/opt/rustwide/target/debug/deps/test_minimum_distance-82d396f9bb22725c)
[INFO] [stderr]   Executable tests/test_precedence.rs (/opt/rustwide/target/debug/deps/test_precedence-d1b74a9953468e67)
[INFO] [stderr]   Executable tests/test_remap.rs (/opt/rustwide/target/debug/deps/test_remap-7e0f284440921570)
[INFO] [stderr]   Executable tests/test_sequence.rs (/opt/rustwide/target/debug/deps/test_sequence-3cbb280f0a89785f)
[INFO] running `Command { std: "docker" "inspect" "5262f0af879977a87a0d1960862a8fb1c79b3a16c29e9535ece66e7a9ed98e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5262f0af879977a87a0d1960862a8fb1c79b3a16c29e9535ece66e7a9ed98e78", kill_on_drop: false }`
[INFO] [stdout] 5262f0af879977a87a0d1960862a8fb1c79b3a16c29e9535ece66e7a9ed98e78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e220ee495d04dc9ee31d20d839ccada84941a2bc2db36e5cccfd627b79a2d72b
[INFO] running `Command { std: "docker" "start" "-a" "e220ee495d04dc9ee31d20d839ccada84941a2bc2db36e5cccfd627b79a2d72b", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/symbol/source.rs:48:34
[INFO] [stderr]     |
[INFO] [stderr] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr]     |                                    ^                 ^
[INFO] [stderr] ...
[INFO] [stderr] 60  |   impl_generate!(
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] ...   |
[INFO] [stderr] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 107 | | );
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/remap.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         mem::replace(self.grammar.sym_source_mut(), intern.source);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/symbol/source.rs:48:34
[INFO] [stderr]     |
[INFO] [stderr] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr]     |                                    ^                 ^
[INFO] [stderr] ...
[INFO] [stderr] 60  |   impl_generate!(
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] ...   |
[INFO] [stderr] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 107 | | );
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:13:24
[INFO] [stderr]     |
[INFO] [stderr] 13  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_parens)]` implied by `#[warn(warnings)]`
[INFO] [stderr]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/remap.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         mem::replace(self.grammar.sym_source_mut(), intern.source);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` implied by `#[warn(warnings)]`
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg` (lib) generated 2 warnings
[INFO] [stderr] warning: `cfg` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cfg-a0ee40b5e4ad9bda)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test generate::genetic::test_zero_mutation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_binarize.rs (/opt/rustwide/target/debug/deps/test_binarize-eea2df25570578f9)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_binarize ... ok
[INFO] [stdout] test test_binarize_very_long_rule ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_classification.rs (/opt/rustwide/target/debug/deps/test_classification-c24e8d18c879fcd0)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_ll_transitive_classification ... ok
[INFO] [stdout] test test_ll_classification ... ok
[INFO] [stdout] test test_lr0 ... 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/test_cycles.rs (/opt/rustwide/target/debug/deps/test_cycles-5a565c1d53fbf6dd)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_cycle_branch ... ok
[INFO] [stdout] test test_remove_cycles ... ok
[INFO] [stdout] test test_rewrite_cycles ... 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/test_first_sets.rs (/opt/rustwide/target/debug/deps/test_first_sets-93715b3a36ab7589)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_simple_first_sets ... ok
[INFO] [stdout] test test_simple_first_sets_altered ... 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] [stderr]      Running tests/test_last_sets.rs (/opt/rustwide/target/debug/deps/test_last_sets-f0780d944f84f752)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_simple_last_sets ... ok
[INFO] [stdout] test test_simple_last_sets_altered ... 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] [stderr]      Running tests/test_minimum_distance.rs (/opt/rustwide/target/debug/deps/test_minimum_distance-82d396f9bb22725c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_minimum_distance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_precedence.rs (/opt/rustwide/target/debug/deps/test_precedence-d1b74a9953468e67)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_ternary_quaternary ... ok
[INFO] [stdout] test test_simple_precedence ... 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] [stderr]      Running tests/test_remap.rs (/opt/rustwide/target/debug/deps/test_remap-7e0f284440921570)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_maps ... ok
[INFO] [stdout] test test_remap_unused_symbols ... ok
[INFO] [stdout] test test_reorder_symbols ... 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/test_sequence.rs (/opt/rustwide/target/debug/deps/test_sequence-3cbb280f0a89785f)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_nulling_sequence ... ok
[INFO] [stdout] test test_sequence ... ok
[INFO] [stdout] test test_sequence_1_4 ... ok
[INFO] [stdout] test test_sequence_combinations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cfg
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/symbol/source.rs:48:34
[INFO] [stderr]     |
[INFO] [stderr] 48  |           impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr]     |                                    ^                 ^
[INFO] [stderr] ...
[INFO] [stderr] 60  |   impl_generate!(
[INFO] [stderr]     |  _-
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |
[INFO] [stderr] 61  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 62  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 63  | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] ...   |
[INFO] [stderr] 106 | |     Symbol, next_sym, Symbol, next_sym, Symbol, next_sym, Symbol, next_sym,
[INFO] [stderr] 107 | | );
[INFO] [stderr]     | | -
[INFO] [stderr]     | |_|
[INFO] [stderr]     | |_in this macro invocation
[INFO] [stderr]     |   in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `impl_generate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 48  -         impl SymbolContainer for ( Symbol $(, $T)* ) {
[INFO] [stderr] 48  +         impl SymbolContainer for  Symbol $(, $T)*  {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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] running `Command { std: "docker" "inspect" "e220ee495d04dc9ee31d20d839ccada84941a2bc2db36e5cccfd627b79a2d72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e220ee495d04dc9ee31d20d839ccada84941a2bc2db36e5cccfd627b79a2d72b", kill_on_drop: false }`
[INFO] [stdout] e220ee495d04dc9ee31d20d839ccada84941a2bc2db36e5cccfd627b79a2d72b