[INFO] fetching crate digtask 0.1.0...
[INFO] checking digtask-0.1.0 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate digtask 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate digtask 0.1.0
[INFO] finished tweaking crates.io crate digtask 0.1.0
[INFO] tweaked toml for crates.io crate digtask 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate digtask 0.1.0 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 crates.io crate digtask 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150
[INFO] running `Command { std: "docker" "start" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150", 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" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150", 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" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking digtask v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/core/config.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct DigConfig {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 23 |     #[serde(default = "default_version")]
[INFO] [stdout] 24 |     pub version: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DigConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CommandEntry` is never used
[INFO] [stdout]   --> src/core/step/basic_step.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum CommandEntry {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/core/step/bash_step.rs:59:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |             entry: format!("{} -c", self.executable).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/core/step/python_step.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |             entry: format!("{} -c", self.executable).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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `digtask` (bin "dig") due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/core/config.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct DigConfig {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 23 |     #[serde(default = "default_version")]
[INFO] [stdout] 24 |     pub version: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DigConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CommandEntry` is never used
[INFO] [stdout]   --> src/core/step/basic_step.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum CommandEntry {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/core/step/bash_step.rs:59:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |             entry: format!("{} -c", self.executable).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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/core/step/python_step.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |             entry: format!("{} -c", self.executable).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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `digtask` (bin "dig" test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150", kill_on_drop: false }`
[INFO] [stdout] 560cd09a808be3a7122a2f6bfa0cd508c897fd7367f384b8ab132e7267552150
