[INFO] fetching crate RustTools 0.0.1...
[INFO] checking RustTools-0.0.1 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate RustTools 0.0.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate RustTools 0.0.1
[INFO] finished tweaking crates.io crate RustTools 0.0.1
[INFO] tweaked toml for crates.io crate RustTools 0.0.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate RustTools 0.0.1 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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_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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b97828632ec81606f605d9f63ee76e984f5e2a94f536043265d2580fc1a21b2c
[INFO] running `Command { std: "docker" "start" "-a" "b97828632ec81606f605d9f63ee76e984f5e2a94f536043265d2580fc1a21b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b97828632ec81606f605d9f63ee76e984f5e2a94f536043265d2580fc1a21b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b97828632ec81606f605d9f63ee76e984f5e2a94f536043265d2580fc1a21b2c", kill_on_drop: false }`
[INFO] [stdout] b97828632ec81606f605d9f63ee76e984f5e2a94f536043265d2580fc1a21b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a029da2fdb4e5090ab8ad1ef32dacd49208e49980a90a255c268595c0ac1c819
[INFO] running `Command { std: "docker" "start" "-a" "a029da2fdb4e5090ab8ad1ef32dacd49208e49980a90a255c268595c0ac1c819", kill_on_drop: false }`
[INFO] [stderr]     Checking RustTools v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/argparse/command.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display};
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/argparse/command.rs:47:16
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn add(mut self, arg: Arg) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> src/argparse/command.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn add(mut self, arg: Arg) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]  --> src/lib.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let command = Command::new("Leo Rust Demo")
[INFO] [stdout]   |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `need`, `desc`, and `default` are never read
[INFO] [stdout]   --> src/argparse/arg.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Arg {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub(crate) need: bool,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 |     pub(crate) desc:String,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 17 |     pub(crate) default: String,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Arg` has a derived impl for the trait `Clone`, 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: unused import: `Display`
[INFO] [stdout]  --> src/argparse/command.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display};
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/argparse/command.rs:47:16
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn add(mut self, arg: Arg) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> src/argparse/command.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn add(mut self, arg: Arg) -> Self {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `need`, `desc`, and `default` are never read
[INFO] [stdout]   --> src/argparse/arg.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Arg {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub(crate) need: bool,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 |     pub(crate) desc:String,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 17 |     pub(crate) default: String,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Arg` has a derived impl for the trait `Clone`, 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: crate `RustTools` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_tools`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "a029da2fdb4e5090ab8ad1ef32dacd49208e49980a90a255c268595c0ac1c819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a029da2fdb4e5090ab8ad1ef32dacd49208e49980a90a255c268595c0ac1c819", kill_on_drop: false }`
[INFO] [stdout] a029da2fdb4e5090ab8ad1ef32dacd49208e49980a90a255c268595c0ac1c819