[INFO] crate evaltrees 0.1.0 is already in cache
[INFO] testing evaltrees-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate evaltrees 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate evaltrees 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate evaltrees 0.1.0
[INFO] finished tweaking crates.io crate evaltrees 0.1.0
[INFO] tweaked toml for crates.io crate evaltrees 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] f3428bd034bef2a49c9476d6c9e9ed0d447e72e8cefc738ead1b818f3324b0a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f3428bd034bef2a49c9476d6c9e9ed0d447e72e8cefc738ead1b818f3324b0a3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling lalrpop-util v0.15.2
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling linked_hash_set v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling symbol v0.1.7
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling lalrpop-snap v0.15.2
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling display_attr v0.1.1
[INFO] [stderr]    Compiling lalrpop v0.15.2
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 02s
[INFO] running `"docker" "inspect" "f3428bd034bef2a49c9476d6c9e9ed0d447e72e8cefc738ead1b818f3324b0a3"`
[INFO] running `"docker" "rm" "-f" "f3428bd034bef2a49c9476d6c9e9ed0d447e72e8cefc738ead1b818f3324b0a3"`
[INFO] [stdout] f3428bd034bef2a49c9476d6c9e9ed0d447e72e8cefc738ead1b818f3324b0a3
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4c0d75e4c8d7b2299556f62b725cd473ee14c61fe9af75c5e87bb7e096096984
[INFO] running `"docker" "start" "-a" "4c0d75e4c8d7b2299556f62b725cd473ee14c61fe9af75c5e87bb7e096096984"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.67s
[INFO] running `"docker" "inspect" "4c0d75e4c8d7b2299556f62b725cd473ee14c61fe9af75c5e87bb7e096096984"`
[INFO] running `"docker" "rm" "-f" "4c0d75e4c8d7b2299556f62b725cd473ee14c61fe9af75c5e87bb7e096096984"`
[INFO] [stdout] 4c0d75e4c8d7b2299556f62b725cd473ee14c61fe9af75c5e87bb7e096096984
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05da84f86b372bac058da35469cb4d975dce818a4b264c560194400e07763928
[INFO] running `"docker" "start" "-a" "05da84f86b372bac058da35469cb4d975dce818a4b264c560194400e07763928"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stderr]      |
[INFO] [stderr] 9607 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stderr]      |
[INFO] [stderr] 9618 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stderr]      |
[INFO] [stderr] 9629 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stderr]      |
[INFO] [stderr] 9640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stderr]      |
[INFO] [stderr] 9809 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stderr]      |
[INFO] [stderr] 9875 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stderr]      |
[INFO] [stderr] 9912 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stderr]      |
[INFO] [stderr] 9962 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stderr]      |
[INFO] [stderr] 9985 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'failure::core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stderr]      |
[INFO] [stderr] 9560 |             let __text = self.text.trim_left();
[INFO] [stderr]      |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/evaltrees-b4670a3eaf37a70e
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test ast::display::tests::type_func_precedence ... ok
[INFO] [stdout] test cst::display::tests::subtraction ... ok
[INFO] [stdout] test cst::display::tests::math_parens ... ok
[INFO] [stdout] test cst::display::tests::call ... ok
[INFO] [stdout] test ast::display::tests::type_forall_precedence ... ok
[INFO] [stdout] test eval::lazy::tests::infinite ... ok
[INFO] [stdout] test eval::lazy::tests::sharing ... ok
[INFO] [stdout] test eval::lazy::tests::app ... ok
[INFO] [stdout] test ast::display::tests::type_list_precedence ... ok
[INFO] [stdout] test eval::lazy::tests::id_int ... ok
[INFO] [stdout] test eval::lazy::tests::strictness ... ok
[INFO] [stdout] test eval::value::tests::app ... ok
[INFO] [stdout] test eval::name::tests::app ... ok
[INFO] [stdout] test eval::name::tests::id_int ... ok
[INFO] [stdout] test eval::name::tests::infinite ... ok
[INFO] [stdout] test cst::display::tests::math_noparens ... ok
[INFO] [stdout] test typeck::tests::poly_id ... ok
[INFO] [stdout] test eval::name::tests::strictness ... ok
[INFO] [stdout] test cst::display::tests::if_prec ... ok
[INFO] [stdout] test typeck::tests::map_map ... ok
[INFO] [stdout] test cst::parser::tests::math_precedence ... ok
[INFO] [stdout] test cst::parser::tests::calls ... ok
[INFO] [stdout] test cst::parser::tests::lists ... ok
[INFO] [stdout] test cst::parser::tests::commands ... ok
[INFO] [stderr]    Doc-tests evaltrees
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/cst/mod.rs - cst (line 6) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "05da84f86b372bac058da35469cb4d975dce818a4b264c560194400e07763928"`
[INFO] running `"docker" "rm" "-f" "05da84f86b372bac058da35469cb4d975dce818a4b264c560194400e07763928"`
[INFO] [stdout] 05da84f86b372bac058da35469cb4d975dce818a4b264c560194400e07763928