[INFO] cloning repository https://github.com/sybrid1982/toy-js-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sybrid1982/toy-js-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsybrid1982%2Ftoy-js-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsybrid1982%2Ftoy-js-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d10570e07f61b7f5ed2c5dd95a13cfbe2e9061bd
[INFO] checking sybrid1982/toy-js-engine against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsybrid1982%2Ftoy-js-engine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sybrid1982/toy-js-engine
[INFO] finished tweaking git repo https://github.com/sybrid1982/toy-js-engine
[INFO] tweaked toml for git repo https://github.com/sybrid1982/toy-js-engine written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sybrid1982/toy-js-engine on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sybrid1982/toy-js-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166
[INFO] running `Command { std: "docker" "start" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking toy-js-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `has_function` is never used
[INFO] [stdout]   --> src/environment.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Environment {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn has_function(&mut self, identifier: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:766:34
[INFO] [stdout]     |
[INFO] [stdout] 766 |         let x = env.get_variable("x".into());
[INFO] [stdout]     |                                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 766 -         let x = env.get_variable("x".into());
[INFO] [stdout] 766 +         let x = env.get_variable("x");
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 766 -         let x = env.get_variable("x".into());
[INFO] [stdout] 766 +         let x = env.get_variable(<&str as Into<_>>::into("x"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:832:30
[INFO] [stdout]     |
[INFO] [stdout] 832 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 832 -             env.get_variable("x".into()),
[INFO] [stdout] 832 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 832 -             env.get_variable("x".into()),
[INFO] [stdout] 832 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:855:30
[INFO] [stdout]     |
[INFO] [stdout] 855 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 855 -             env.get_variable("x".into()),
[INFO] [stdout] 855 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 855 -             env.get_variable("x".into()),
[INFO] [stdout] 855 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:877:30
[INFO] [stdout]     |
[INFO] [stdout] 877 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 877 -             env.get_variable("x".into()),
[INFO] [stdout] 877 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 877 -             env.get_variable("x".into()),
[INFO] [stdout] 877 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:881:30
[INFO] [stdout]     |
[INFO] [stdout] 881 |             env.get_variable("y".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 881 -             env.get_variable("y".into()),
[INFO] [stdout] 881 +             env.get_variable("y"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 881 -             env.get_variable("y".into()),
[INFO] [stdout] 881 +             env.get_variable(<&str as Into<_>>::into("y")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:907:30
[INFO] [stdout]     |
[INFO] [stdout] 907 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 907 -             env.get_variable("x".into()),
[INFO] [stdout] 907 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 907 -             env.get_variable("x".into()),
[INFO] [stdout] 907 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:912:30
[INFO] [stdout]     |
[INFO] [stdout] 912 |             env.get_variable("y".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 912 -             env.get_variable("y".into()),
[INFO] [stdout] 912 +             env.get_variable("y"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 912 -             env.get_variable("y".into()),
[INFO] [stdout] 912 +             env.get_variable(<&str as Into<_>>::into("y")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:938:30
[INFO] [stdout]     |
[INFO] [stdout] 938 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 938 -             env.get_variable("x".into()),
[INFO] [stdout] 938 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 938 -             env.get_variable("x".into()),
[INFO] [stdout] 938 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:942:30
[INFO] [stdout]     |
[INFO] [stdout] 942 |             env.get_variable("y".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 942 -             env.get_variable("y".into()),
[INFO] [stdout] 942 +             env.get_variable("y"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 942 -             env.get_variable("y".into()),
[INFO] [stdout] 942 +             env.get_variable(<&str as Into<_>>::into("y")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:961:30
[INFO] [stdout]     |
[INFO] [stdout] 961 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 961 -             env.get_variable("x".into()),
[INFO] [stdout] 961 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 961 -             env.get_variable("x".into()),
[INFO] [stdout] 961 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:979:30
[INFO] [stdout]     |
[INFO] [stdout] 979 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 979 -             env.get_variable("x".into()),
[INFO] [stdout] 979 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 979 -             env.get_variable("x".into()),
[INFO] [stdout] 979 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]    --> src/integration_tests.rs:998:30
[INFO] [stdout]     |
[INFO] [stdout] 998 |             env.get_variable("x".into()),
[INFO] [stdout]     |                              ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 998 -             env.get_variable("x".into()),
[INFO] [stdout] 998 +             env.get_variable("x"),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 998 -             env.get_variable("x".into()),
[INFO] [stdout] 998 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1017:30
[INFO] [stdout]      |
[INFO] [stdout] 1017 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1017 -             env.get_variable("x".into()),
[INFO] [stdout] 1017 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1017 -             env.get_variable("x".into()),
[INFO] [stdout] 1017 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1040:30
[INFO] [stdout]      |
[INFO] [stdout] 1040 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1040 -             env.get_variable("x".into()),
[INFO] [stdout] 1040 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1040 -             env.get_variable("x".into()),
[INFO] [stdout] 1040 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1063:30
[INFO] [stdout]      |
[INFO] [stdout] 1063 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1063 -             env.get_variable("x".into()),
[INFO] [stdout] 1063 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1063 -             env.get_variable("x".into()),
[INFO] [stdout] 1063 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1088:30
[INFO] [stdout]      |
[INFO] [stdout] 1088 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1088 -             env.get_variable("x".into()),
[INFO] [stdout] 1088 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1088 -             env.get_variable("x".into()),
[INFO] [stdout] 1088 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1104:30
[INFO] [stdout]      |
[INFO] [stdout] 1104 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1104 -             env.get_variable("x".into()),
[INFO] [stdout] 1104 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1104 -             env.get_variable("x".into()),
[INFO] [stdout] 1104 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1120:30
[INFO] [stdout]      |
[INFO] [stdout] 1120 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1120 -             env.get_variable("x".into()),
[INFO] [stdout] 1120 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1120 -             env.get_variable("x".into()),
[INFO] [stdout] 1120 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1136:30
[INFO] [stdout]      |
[INFO] [stdout] 1136 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1136 -             env.get_variable("x".into()),
[INFO] [stdout] 1136 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1136 -             env.get_variable("x".into()),
[INFO] [stdout] 1136 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1152:30
[INFO] [stdout]      |
[INFO] [stdout] 1152 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1152 -             env.get_variable("x".into()),
[INFO] [stdout] 1152 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1152 -             env.get_variable("x".into()),
[INFO] [stdout] 1152 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str`
[INFO] [stdout]     --> src/integration_tests.rs:1173:30
[INFO] [stdout]      |
[INFO] [stdout] 1173 |             env.get_variable("x".into()),
[INFO] [stdout]      |                              ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]      |
[INFO] [stdout] 1173 -             env.get_variable("x".into()),
[INFO] [stdout] 1173 +             env.get_variable("x"),
[INFO] [stdout]      |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]      |
[INFO] [stdout] 1173 -             env.get_variable("x".into()),
[INFO] [stdout] 1173 +             env.get_variable(<&str as Into<_>>::into("x")),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toy-js-engine` (bin "toy-js-engine" test) due to 21 previous errors
[INFO] running `Command { std: "docker" "inspect" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166", kill_on_drop: false }`
[INFO] [stdout] 44e1fe367494688365728f762db3b74bdb7b9132a75e13473064669efb27c166
