[INFO] fetching crate evaltrees 0.1.0...
[INFO] testing evaltrees-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate evaltrees 0.1.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate evaltrees 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-106/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
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[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 2276bea59bb9b680cd3709d3c9557e88fb03549b0c68ec17ac7de9d2e0cfc804
[INFO] running `Command { std: "docker" "start" "-a" "2276bea59bb9b680cd3709d3c9557e88fb03549b0c68ec17ac7de9d2e0cfc804", kill_on_drop: false }`
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[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
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[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling lalrpop-util v0.15.2
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling byte-tools v0.2.0
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[INFO] [stderr]    Compiling memchr v2.4.0
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[INFO] [stderr]    Compiling symbol v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling petgraph v0.4.13
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[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling lalrpop-snap v0.15.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling display_attr v0.1.1
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling lalrpop v0.15.2
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "2276bea59bb9b680cd3709d3c9557e88fb03549b0c68ec17ac7de9d2e0cfc804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2276bea59bb9b680cd3709d3c9557e88fb03549b0c68ec17ac7de9d2e0cfc804", kill_on_drop: false }`
[INFO] [stdout] 2276bea59bb9b680cd3709d3c9557e88fb03549b0c68ec17ac7de9d2e0cfc804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a9390e49abcd38473e512cc1353c21a795f77962a561ce77be3bd6f6f9ce37a
[INFO] running `Command { std: "docker" "start" "-a" "5a9390e49abcd38473e512cc1353c21a795f77962a561ce77be3bd6f6f9ce37a", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling evaltrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9607:5
[INFO] [stdout]      |
[INFO] [stdout] 9607 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9618:5
[INFO] [stdout]      |
[INFO] [stdout] 9618 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9629:5
[INFO] [stdout]      |
[INFO] [stdout] 9629 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9640:5
[INFO] [stdout]      |
[INFO] [stdout] 9640 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9809:5
[INFO] [stdout]      |
[INFO] [stdout] 9809 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9875:5
[INFO] [stdout]      |
[INFO] [stdout] 9875 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9912:5
[INFO] [stdout]      |
[INFO] [stdout] 9912 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9962:5
[INFO] [stdout]      |
[INFO] [stdout] 9962 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9985:5
[INFO] [stdout]      |
[INFO] [stdout] 9985 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]      --> src/cst/parser/grammar.rs:10074:5
[INFO] [stdout]       |
[INFO] [stdout] 10074 |     (__0)
[INFO] [stdout]       |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/repl.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stdout]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `failure::core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]     --> src/cst/parser/grammar.rs:9560:36
[INFO] [stdout]      |
[INFO] [stdout] 9560 |             let __text = self.text.trim_left();
[INFO] [stdout]      |                                    ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.66s
[INFO] running `Command { std: "docker" "inspect" "5a9390e49abcd38473e512cc1353c21a795f77962a561ce77be3bd6f6f9ce37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a9390e49abcd38473e512cc1353c21a795f77962a561ce77be3bd6f6f9ce37a", kill_on_drop: false }`
[INFO] [stdout] 5a9390e49abcd38473e512cc1353c21a795f77962a561ce77be3bd6f6f9ce37a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 555cd5020f1c3e1b1c3a08a026633a8feab3d3596ce7e2722ca73f675530f5ec
[INFO] running `Command { std: "docker" "start" "-a" "555cd5020f1c3e1b1c3a08a026633a8feab3d3596ce7e2722ca73f675530f5ec", kill_on_drop: false }`
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `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 associated function: `trim_start`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `evaltrees` (lib) generated 12 warnings
[INFO] [stderr] warning: `evaltrees` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/evaltrees-de5a3d0b80391232)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test cst::display::tests::math_noparens ... ok
[INFO] [stdout] test cst::display::tests::call ... ok
[INFO] [stdout] test cst::display::tests::if_prec ... ok
[INFO] [stdout] test ast::display::tests::type_func_precedence ... ok
[INFO] [stdout] test cst::display::tests::subtraction ... ok
[INFO] [stdout] test eval::lazy::tests::app ... ok
[INFO] [stdout] test eval::lazy::tests::infinite ... ok
[INFO] [stdout] test ast::display::tests::type_forall_precedence ... ok
[INFO] [stdout] test ast::display::tests::type_list_precedence ... ok
[INFO] [stdout] test cst::display::tests::math_parens ... ok
[INFO] [stdout] test eval::lazy::tests::sharing ... ok
[INFO] [stdout] test eval::lazy::tests::id_int ... ok
[INFO] [stdout] test eval::lazy::tests::strictness ... ok
[INFO] [stdout] test eval::name::tests::app ... ok
[INFO] [stdout] test eval::name::tests::id_int ... ok
[INFO] [stdout] test eval::name::tests::strictness ... ok
[INFO] [stdout] test eval::value::tests::app ... ok
[INFO] [stdout] test eval::name::tests::infinite ... ok
[INFO] [stdout] test typeck::tests::poly_id ... ok
[INFO] [stdout] test typeck::tests::map_map ... ok
[INFO] [stdout] test cst::parser::tests::calls ... ok
[INFO] [stdout] test cst::parser::tests::math_precedence ... ok
[INFO] [stdout] test cst::parser::tests::lists ... ok
[INFO] [stderr]    Doc-tests evaltrees
[INFO] [stdout] test cst::parser::tests::commands ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]     --> /opt/rustwide/workdir/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]      --> /opt/rustwide/workdir/src/cst/parser/grammar.rs:10074:5
[INFO] [stderr]       |
[INFO] [stderr] 10074 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[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; finished in 2.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "555cd5020f1c3e1b1c3a08a026633a8feab3d3596ce7e2722ca73f675530f5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "555cd5020f1c3e1b1c3a08a026633a8feab3d3596ce7e2722ca73f675530f5ec", kill_on_drop: false }`
[INFO] [stdout] 555cd5020f1c3e1b1c3a08a026633a8feab3d3596ce7e2722ca73f675530f5ec
