[INFO] cloning repository https://github.com/Michael0x2a/impo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Michael0x2a/impo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael0x2a%2Fimpo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael0x2a%2Fimpo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a49d12d09be2b0e4f97419d7165a8a79dd845cd
[INFO] testing Michael0x2a/impo against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichael0x2a%2Fimpo" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Michael0x2a/impo on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Michael0x2a/impo
[INFO] finished tweaking git repo https://github.com/Michael0x2a/impo
[INFO] tweaked toml for git repo https://github.com/Michael0x2a/impo written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Michael0x2a/impo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5599a9a600117f38e5b1e2a03eb69ee44973a1ba64e599a7a013a87c0bf3322
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f5599a9a600117f38e5b1e2a03eb69ee44973a1ba64e599a7a013a87c0bf3322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5599a9a600117f38e5b1e2a03eb69ee44973a1ba64e599a7a013a87c0bf3322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5599a9a600117f38e5b1e2a03eb69ee44973a1ba64e599a7a013a87c0bf3322", kill_on_drop: false }`
[INFO] [stdout] f5599a9a600117f38e5b1e2a03eb69ee44973a1ba64e599a7a013a87c0bf3322
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3df49d9c223ec92b5dca8fbc7d0e3ab7db56448876a8d3e0571e4e5163a7257a
[INFO] running `Command { std: "docker" "start" "-a" "3df49d9c223ec92b5dca8fbc7d0e3ab7db56448876a8d3e0571e4e5163a7257a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]    Compiling snowflake v1.3.0
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.21
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling impo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/parser/tokens.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         (self.token_type == TokenType::Comment
[INFO] [stdout] 96 | |             || self.token_type == TokenType::Whitespace)
[INFO] [stdout]    | |________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 95 |         self.token_type == TokenType::Comment
[INFO] [stdout] 96 |             || self.token_type == TokenType::Whitespace
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         (self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 | |             || self.token_type == TokenType::BangEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 100 |         self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 |             || self.token_type == TokenType::BangEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | /         (self.token_type == TokenType::Greater
[INFO] [stdout] 106 | |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 | |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 | |             || self.token_type == TokenType::LessEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 105 |         self.token_type == TokenType::Greater
[INFO] [stdout] 106 |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 |             || self.token_type == TokenType::LessEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | /         (self.token_type == TokenType::Plus
[INFO] [stdout] 113 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 112 |         self.token_type == TokenType::Plus
[INFO] [stdout] 113 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | /         (self.token_type == TokenType::Star
[INFO] [stdout] 118 | |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 | |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 | |             || self.token_type == TokenType::Percent)
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 117 |         self.token_type == TokenType::Star
[INFO] [stdout] 118 |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 |             || self.token_type == TokenType::Percent
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 | /         (self.token_type == TokenType::Bang
[INFO] [stdout] 125 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 124 |         self.token_type == TokenType::Bang
[INFO] [stdout] 125 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/typecheck/infer.rs:131:45
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn is_one_of(typ: ImpoType, matchers: &Vec<&Fn(ImpoType) -> bool>) -> bool
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(ImpoType) -> bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:21:23
[INFO] [stdout]    |
[INFO] [stdout] 21 |              int_op: &Fn(i64, i64) -> i64,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i64, i64) -> i64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:22:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |              float_op: &Fn(f64, f64) -> f64) -> Result<Value, ImpoError> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pool: &'a ReadOnlyStringPool,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(pool: &'a ReadOnlyStringPool) -> TypedNodeToStrVisitor<'a> {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.04s
[INFO] running `Command { std: "docker" "inspect" "3df49d9c223ec92b5dca8fbc7d0e3ab7db56448876a8d3e0571e4e5163a7257a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df49d9c223ec92b5dca8fbc7d0e3ab7db56448876a8d3e0571e4e5163a7257a", kill_on_drop: false }`
[INFO] [stdout] 3df49d9c223ec92b5dca8fbc7d0e3ab7db56448876a8d3e0571e4e5163a7257a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d68e9243d02550217461eea123cafc5dce23c13696c90cfdcc99c27c8dd2b9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a9d68e9243d02550217461eea123cafc5dce23c13696c90cfdcc99c27c8dd2b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling impo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/parser/tokens.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         (self.token_type == TokenType::Comment
[INFO] [stdout] 96 | |             || self.token_type == TokenType::Whitespace)
[INFO] [stdout]    | |________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 95 |         self.token_type == TokenType::Comment
[INFO] [stdout] 96 |             || self.token_type == TokenType::Whitespace
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         (self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 | |             || self.token_type == TokenType::BangEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 100 |         self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 |             || self.token_type == TokenType::BangEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | /         (self.token_type == TokenType::Greater
[INFO] [stdout] 106 | |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 | |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 | |             || self.token_type == TokenType::LessEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 105 |         self.token_type == TokenType::Greater
[INFO] [stdout] 106 |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 |             || self.token_type == TokenType::LessEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | /         (self.token_type == TokenType::Plus
[INFO] [stdout] 113 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 112 |         self.token_type == TokenType::Plus
[INFO] [stdout] 113 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | /         (self.token_type == TokenType::Star
[INFO] [stdout] 118 | |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 | |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 | |             || self.token_type == TokenType::Percent)
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 117 |         self.token_type == TokenType::Star
[INFO] [stdout] 118 |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 |             || self.token_type == TokenType::Percent
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 | /         (self.token_type == TokenType::Bang
[INFO] [stdout] 125 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 124 |         self.token_type == TokenType::Bang
[INFO] [stdout] 125 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/typecheck/infer.rs:131:45
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn is_one_of(typ: ImpoType, matchers: &Vec<&Fn(ImpoType) -> bool>) -> bool
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(ImpoType) -> bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:21:23
[INFO] [stdout]    |
[INFO] [stdout] 21 |              int_op: &Fn(i64, i64) -> i64,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i64, i64) -> i64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:22:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |              float_op: &Fn(f64, f64) -> f64) -> Result<Value, ImpoError> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pool: &'a ReadOnlyStringPool,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(pool: &'a ReadOnlyStringPool) -> TypedNodeToStrVisitor<'a> {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/parser/tokens.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 | /         (self.token_type == TokenType::Comment
[INFO] [stdout] 96 | |             || self.token_type == TokenType::Whitespace)
[INFO] [stdout]    | |________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 95 |         self.token_type == TokenType::Comment
[INFO] [stdout] 96 |             || self.token_type == TokenType::Whitespace
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         (self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 | |             || self.token_type == TokenType::BangEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 100 |         self.token_type == TokenType::EqualEqual
[INFO] [stdout] 101 |             || self.token_type == TokenType::BangEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | /         (self.token_type == TokenType::Greater
[INFO] [stdout] 106 | |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 | |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 | |             || self.token_type == TokenType::LessEqual)
[INFO] [stdout]     | |_______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 105 |         self.token_type == TokenType::Greater
[INFO] [stdout] 106 |             || self.token_type == TokenType::GreaterEqual
[INFO] [stdout] 107 |             || self.token_type == TokenType::Less
[INFO] [stdout] 108 |             || self.token_type == TokenType::LessEqual
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 | /         (self.token_type == TokenType::Plus
[INFO] [stdout] 113 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 112 |         self.token_type == TokenType::Plus
[INFO] [stdout] 113 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | /         (self.token_type == TokenType::Star
[INFO] [stdout] 118 | |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 | |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 | |             || self.token_type == TokenType::Percent)
[INFO] [stdout]     | |_____________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 117 |         self.token_type == TokenType::Star
[INFO] [stdout] 118 |             || self.token_type == TokenType::Slash
[INFO] [stdout] 119 |             || self.token_type == TokenType::SlashSlash
[INFO] [stdout] 120 |             || self.token_type == TokenType::Percent
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/parser/tokens.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 | /         (self.token_type == TokenType::Bang
[INFO] [stdout] 125 | |             || self.token_type == TokenType::Minus)
[INFO] [stdout]     | |___________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 124 |         self.token_type == TokenType::Bang
[INFO] [stdout] 125 |             || self.token_type == TokenType::Minus
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/typecheck/infer.rs:131:45
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn is_one_of(typ: ImpoType, matchers: &Vec<&Fn(ImpoType) -> bool>) -> bool
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(ImpoType) -> bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:21:23
[INFO] [stdout]    |
[INFO] [stdout] 21 |              int_op: &Fn(i64, i64) -> i64,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i64, i64) -> i64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/interpreter.rs:22:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |              float_op: &Fn(f64, f64) -> f64) -> Result<Value, ImpoError> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pool: &'a ReadOnlyStringPool,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/typed.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(pool: &'a ReadOnlyStringPool) -> TypedNodeToStrVisitor<'a> {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "a9d68e9243d02550217461eea123cafc5dce23c13696c90cfdcc99c27c8dd2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d68e9243d02550217461eea123cafc5dce23c13696c90cfdcc99c27c8dd2b9", kill_on_drop: false }`
[INFO] [stdout] a9d68e9243d02550217461eea123cafc5dce23c13696c90cfdcc99c27c8dd2b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e5b7da238d029ae5543d70dfdc1f8fb62869c7d0a8c87a5c1a77623f62249217
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e5b7da238d029ae5543d70dfdc1f8fb62869c7d0a8c87a5c1a77623f62249217", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/parser/tokens.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 | /         (self.token_type == TokenType::Comment
[INFO] [stderr] 96 | |             || self.token_type == TokenType::Whitespace)
[INFO] [stderr]    | |________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 95 |         self.token_type == TokenType::Comment
[INFO] [stderr] 96 |             || self.token_type == TokenType::Whitespace
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 | /         (self.token_type == TokenType::EqualEqual
[INFO] [stderr] 101 | |             || self.token_type == TokenType::BangEqual)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 100 |         self.token_type == TokenType::EqualEqual
[INFO] [stderr] 101 |             || self.token_type == TokenType::BangEqual
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 | /         (self.token_type == TokenType::Greater
[INFO] [stderr] 106 | |             || self.token_type == TokenType::GreaterEqual
[INFO] [stderr] 107 | |             || self.token_type == TokenType::Less
[INFO] [stderr] 108 | |             || self.token_type == TokenType::LessEqual)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 105 |         self.token_type == TokenType::Greater
[INFO] [stderr] 106 |             || self.token_type == TokenType::GreaterEqual
[INFO] [stderr] 107 |             || self.token_type == TokenType::Less
[INFO] [stderr] 108 |             || self.token_type == TokenType::LessEqual
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 | /         (self.token_type == TokenType::Plus
[INFO] [stderr] 113 | |             || self.token_type == TokenType::Minus)
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 112 |         self.token_type == TokenType::Plus
[INFO] [stderr] 113 |             || self.token_type == TokenType::Minus
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 | /         (self.token_type == TokenType::Star
[INFO] [stderr] 118 | |             || self.token_type == TokenType::Slash
[INFO] [stderr] 119 | |             || self.token_type == TokenType::SlashSlash
[INFO] [stderr] 120 | |             || self.token_type == TokenType::Percent)
[INFO] [stderr]     | |_____________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 117 |         self.token_type == TokenType::Star
[INFO] [stderr] 118 |             || self.token_type == TokenType::Slash
[INFO] [stderr] 119 |             || self.token_type == TokenType::SlashSlash
[INFO] [stderr] 120 |             || self.token_type == TokenType::Percent
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 | /         (self.token_type == TokenType::Bang
[INFO] [stderr] 125 | |             || self.token_type == TokenType::Minus)
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 124 |         self.token_type == TokenType::Bang
[INFO] [stderr] 125 |             || self.token_type == TokenType::Minus
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/typecheck/infer.rs:131:45
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn is_one_of(typ: ImpoType, matchers: &Vec<&Fn(ImpoType) -> bool>) -> bool
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(ImpoType) -> bool`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter/interpreter.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |              int_op: &Fn(i64, i64) -> i64,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i64, i64) -> i64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter/interpreter.rs:22:25
[INFO] [stderr]    |
[INFO] [stderr] 22 |              float_op: &Fn(f64, f64) -> f64) -> Result<Value, ImpoError> {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/typed.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pool: &'a ReadOnlyStringPool,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/typed.rs:33:26
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(pool: &'a ReadOnlyStringPool) -> TypedNodeToStrVisitor<'a> {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/parser/tokens.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 | /         (self.token_type == TokenType::Comment
[INFO] [stderr] 96 | |             || self.token_type == TokenType::Whitespace)
[INFO] [stderr]    | |________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 95 |         self.token_type == TokenType::Comment
[INFO] [stderr] 96 |             || self.token_type == TokenType::Whitespace
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 | /         (self.token_type == TokenType::EqualEqual
[INFO] [stderr] 101 | |             || self.token_type == TokenType::BangEqual)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 100 |         self.token_type == TokenType::EqualEqual
[INFO] [stderr] 101 |             || self.token_type == TokenType::BangEqual
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 | /         (self.token_type == TokenType::Greater
[INFO] [stderr] 106 | |             || self.token_type == TokenType::GreaterEqual
[INFO] [stderr] 107 | |             || self.token_type == TokenType::Less
[INFO] [stderr] 108 | |             || self.token_type == TokenType::LessEqual)
[INFO] [stderr]     | |_______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 105 |         self.token_type == TokenType::Greater
[INFO] [stderr] 106 |             || self.token_type == TokenType::GreaterEqual
[INFO] [stderr] 107 |             || self.token_type == TokenType::Less
[INFO] [stderr] 108 |             || self.token_type == TokenType::LessEqual
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 | /         (self.token_type == TokenType::Plus
[INFO] [stderr] 113 | |             || self.token_type == TokenType::Minus)
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 112 |         self.token_type == TokenType::Plus
[INFO] [stderr] 113 |             || self.token_type == TokenType::Minus
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 | /         (self.token_type == TokenType::Star
[INFO] [stderr] 118 | |             || self.token_type == TokenType::Slash
[INFO] [stderr] 119 | |             || self.token_type == TokenType::SlashSlash
[INFO] [stderr] 120 | |             || self.token_type == TokenType::Percent)
[INFO] [stderr]     | |_____________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 117 |         self.token_type == TokenType::Star
[INFO] [stderr] 118 |             || self.token_type == TokenType::Slash
[INFO] [stderr] 119 |             || self.token_type == TokenType::SlashSlash
[INFO] [stderr] 120 |             || self.token_type == TokenType::Percent
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/parser/tokens.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 | /         (self.token_type == TokenType::Bang
[INFO] [stderr] 125 | |             || self.token_type == TokenType::Minus)
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 124 |         self.token_type == TokenType::Bang
[INFO] [stderr] 125 |             || self.token_type == TokenType::Minus
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/typecheck/infer.rs:131:45
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn is_one_of(typ: ImpoType, matchers: &Vec<&Fn(ImpoType) -> bool>) -> bool
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(ImpoType) -> bool`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter/interpreter.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |              int_op: &Fn(i64, i64) -> i64,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i64, i64) -> i64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter/interpreter.rs:22:25
[INFO] [stderr]    |
[INFO] [stderr] 22 |              float_op: &Fn(f64, f64) -> f64) -> Result<Value, ImpoError> {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/typed.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pool: &'a ReadOnlyStringPool,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/typed.rs:33:26
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(pool: &'a ReadOnlyStringPool) -> TypedNodeToStrVisitor<'a> {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadOnlyStringPool`
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings 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
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/impo-971c29a153214117
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/impo-dc3dce41c3fe8289
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests impo
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e5b7da238d029ae5543d70dfdc1f8fb62869c7d0a8c87a5c1a77623f62249217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5b7da238d029ae5543d70dfdc1f8fb62869c7d0a8c87a5c1a77623f62249217", kill_on_drop: false }`
[INFO] [stdout] e5b7da238d029ae5543d70dfdc1f8fb62869c7d0a8c87a5c1a77623f62249217