[INFO] cloning repository https://github.com/ShrekBoards/gctconv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShrekBoards/gctconv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShrekBoards%2Fgctconv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShrekBoards%2Fgctconv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09821811dcfb2609f854eeea7b7d8ef81fbbdc5d
[INFO] checking ShrekBoards/gctconv against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShrekBoards%2Fgctconv" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShrekBoards/gctconv on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ShrekBoards/gctconv
[INFO] finished tweaking git repo https://github.com/ShrekBoards/gctconv
[INFO] tweaked toml for git repo https://github.com/ShrekBoards/gctconv written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ShrekBoards/gctconv 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exitcode v1.1.2
[INFO] [stderr]   Downloaded syn v1.0.72
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bcc4cdf35b26e4eaf17189af64538138793e8e8b92af284bbe12b093f9cd697
[INFO] running `Command { std: "docker" "start" "-a" "5bcc4cdf35b26e4eaf17189af64538138793e8e8b92af284bbe12b093f9cd697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bcc4cdf35b26e4eaf17189af64538138793e8e8b92af284bbe12b093f9cd697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bcc4cdf35b26e4eaf17189af64538138793e8e8b92af284bbe12b093f9cd697", kill_on_drop: false }`
[INFO] [stdout] 5bcc4cdf35b26e4eaf17189af64538138793e8e8b92af284bbe12b093f9cd697
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04e63e1730da9beb7d9d2aac4859e486fedb7639eec8daf444f9fa73f3cd2b31
[INFO] running `Command { std: "docker" "start" "-a" "04e63e1730da9beb7d9d2aac4859e486fedb7639eec8daf444f9fa73f3cd2b31", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking exitcode v1.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking gctconv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/main.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Metadata`
[INFO] [stdout]  --> src/main.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fs::{self, File, Metadata},
[INFO] [stdout]   |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/main.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Metadata`
[INFO] [stdout]  --> src/main.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fs::{self, File, Metadata},
[INFO] [stdout]   |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToPrimitive`
[INFO] [stdout]   --> src/main.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ToPrimitive`
[INFO] [stdout]   --> src/main.rs:13:33
[INFO] [stdout]    |
[INFO] [stdout] 13 | use num_traits::{FromPrimitive, ToPrimitive};
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let fn_string;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_fn_string` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:70:26
[INFO] [stdout]    |
[INFO] [stdout] 70 |             Some(str) => fn_string = str,
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |             None => fn_string = "[filename error]",
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |         None => fn_string = "[filename error]",
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let fn_string;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_fn_string` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:70:26
[INFO] [stdout]    |
[INFO] [stdout] 70 |             Some(str) => fn_string = str,
[INFO] [stdout]    |                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |             None => fn_string = "[filename error]",
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]   --> src/main.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |         None => fn_string = "[filename error]",
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let fn_string;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fn_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:392:26
[INFO] [stdout]     |
[INFO] [stdout] 392 |             Some(str) => fn_string = str,
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:393:21
[INFO] [stdout]     |
[INFO] [stdout] 393 |             None => fn_string = "[filename error]",
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:395:17
[INFO] [stdout]     |
[INFO] [stdout] 395 |         None => fn_string = "[filename error]",
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:543:17
[INFO] [stdout]     |
[INFO] [stdout] 543 |             let fn_string;
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fn_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fs_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:544:17
[INFO] [stdout]     |
[INFO] [stdout] 544 |             let fs_string;
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fs_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:547:34
[INFO] [stdout]     |
[INFO] [stdout] 547 |                     Some(str) => fn_string = str,
[INFO] [stdout]     |                                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:548:29
[INFO] [stdout]     |
[INFO] [stdout] 548 |                     None => fn_string = "[filename error]",
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:550:25
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 None => fn_string = "[filename error]",
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:555:34
[INFO] [stdout]     |
[INFO] [stdout] 555 |                     Some(str) => fs_string = str,
[INFO] [stdout]     |                                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:556:29
[INFO] [stdout]     |
[INFO] [stdout] 556 |                     None => fs_string = "[filename error]",
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:558:25
[INFO] [stdout]     |
[INFO] [stdout] 558 |                 None => fs_string = "[filename error]",
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let fn_string;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fn_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:392:26
[INFO] [stdout]     |
[INFO] [stdout] 392 |             Some(str) => fn_string = str,
[INFO] [stdout]     |                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:393:21
[INFO] [stdout]     |
[INFO] [stdout] 393 |             None => fn_string = "[filename error]",
[INFO] [stdout]     |                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:395:17
[INFO] [stdout]     |
[INFO] [stdout] 395 |         None => fn_string = "[filename error]",
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fn_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:543:17
[INFO] [stdout]     |
[INFO] [stdout] 543 |             let fn_string;
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fn_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fs_string` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:544:17
[INFO] [stdout]     |
[INFO] [stdout] 544 |             let fs_string;
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_fs_string` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:547:34
[INFO] [stdout]     |
[INFO] [stdout] 547 |                     Some(str) => fn_string = str,
[INFO] [stdout]     |                                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:548:29
[INFO] [stdout]     |
[INFO] [stdout] 548 |                     None => fn_string = "[filename error]",
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fn_string` is never read
[INFO] [stdout]    --> src/main.rs:550:25
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 None => fn_string = "[filename error]",
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:555:34
[INFO] [stdout]     |
[INFO] [stdout] 555 |                     Some(str) => fs_string = str,
[INFO] [stdout]     |                                  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:556:29
[INFO] [stdout]     |
[INFO] [stdout] 556 |                     None => fs_string = "[filename error]",
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `fs_string` is never read
[INFO] [stdout]    --> src/main.rs:558:25
[INFO] [stdout]     |
[INFO] [stdout] 558 |                 None => fs_string = "[filename error]",
[INFO] [stdout]     |                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_short` is never used
[INFO] [stdout]    --> src/main.rs:670:4
[INFO] [stdout]     |
[INFO] [stdout] 670 | fn read_short(mut file: &File) -> Result<u16, Error> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_short` is never used
[INFO] [stdout]    --> src/main.rs:670:4
[INFO] [stdout]     |
[INFO] [stdout] 670 | fn read_short(mut file: &File) -> Result<u16, Error> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "04e63e1730da9beb7d9d2aac4859e486fedb7639eec8daf444f9fa73f3cd2b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e63e1730da9beb7d9d2aac4859e486fedb7639eec8daf444f9fa73f3cd2b31", kill_on_drop: false }`
[INFO] [stdout] 04e63e1730da9beb7d9d2aac4859e486fedb7639eec8daf444f9fa73f3cd2b31
