[INFO] cloning repository https://github.com/Jeffrey-P-McAteer/system-system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jeffrey-P-McAteer/system-system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffrey-P-McAteer%2Fsystem-system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffrey-P-McAteer%2Fsystem-system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 836990317513f59a646db9ecff5c5af66eb1e8dd
[INFO] checking Jeffrey-P-McAteer/system-system against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffrey-P-McAteer%2Fsystem-system" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jeffrey-P-McAteer/system-system 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/Jeffrey-P-McAteer/system-system
[INFO] finished tweaking git repo https://github.com/Jeffrey-P-McAteer/system-system
[INFO] tweaked toml for git repo https://github.com/Jeffrey-P-McAteer/system-system written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jeffrey-P-McAteer/system-system 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]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Jeffrey-P-McAteer/system-system against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeffrey-P-McAteer%2Fsystem-system" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jeffrey-P-McAteer/system-system on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jeffrey-P-McAteer/system-system
[INFO] finished tweaking git repo https://github.com/Jeffrey-P-McAteer/system-system
[INFO] tweaked toml for git repo https://github.com/Jeffrey-P-McAteer/system-system written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Jeffrey-P-McAteer/system-system 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" "+7622c0f807a4e13c4db886a1681bf343795692df" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-embed-utils v5.1.0
[INFO] [stderr]   Downloaded rust-embed-impl v5.9.0
[INFO] [stderr]   Downloaded rust-embed v5.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09ec772c8205c59a05fece23d55a96465e9959aade7a5afcc7d3ae26488c6186
[INFO] running `Command { std: "docker" "start" "-a" "09ec772c8205c59a05fece23d55a96465e9959aade7a5afcc7d3ae26488c6186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09ec772c8205c59a05fece23d55a96465e9959aade7a5afcc7d3ae26488c6186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09ec772c8205c59a05fece23d55a96465e9959aade7a5afcc7d3ae26488c6186", kill_on_drop: false }`
[INFO] [stdout] 09ec772c8205c59a05fece23d55a96465e9959aade7a5afcc7d3ae26488c6186
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dnon_local_definitions" "-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" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e294ecc2681d3f437115ac5e5b81799580eec7ce9fa584a963231b62dab3b147
[INFO] running `Command { std: "docker" "start" "-a" "e294ecc2681d3f437115ac5e5b81799580eec7ce9fa584a963231b62dab3b147", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking rust-embed-utils v5.1.0
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]    Compiling rust-embed-impl v5.9.0
[INFO] [stderr]     Checking rust-embed v5.9.0
[INFO] [stderr]     Checking system-system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `quote_spanned`, `quote`
[INFO] [stdout]  --> src/lib.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |             ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `quote_spanned`, `quote`
[INFO] [stdout]  --> src/lib.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |             ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `ExprBlock`, `PatWild`, `Type`
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   ExprBlock,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 17 |   Block,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |   PatWild,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 24 |   Type,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `ExprBlock`, `PatWild`, `Type`
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   ExprBlock,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 17 |   Block,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |   PatWild,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 24 |   Type,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `quote_spanned`, `quote`
[INFO] [stdout]  --> src/lib.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use quote::{quote, quote_spanned};
[INFO] [stdout]   |             ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `ExprBlock`, `PatWild`, `Type`
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   ExprBlock,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 17 |   Block,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |   PatWild,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 24 |   Type,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use syn::spanned::Spanned;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use syn::spanned::Spanned;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `syn::spanned::Spanned`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use syn::spanned::Spanned;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `brace_token`
[INFO] [stdout]   --> src/lib.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let brace_token = braced!(block_content in input);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_brace_token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `brace_token`
[INFO] [stdout]   --> src/lib.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let brace_token = braced!(block_content in input);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_brace_token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `brace_token`
[INFO] [stdout]   --> src/lib.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let brace_token = braced!(block_content in input);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_brace_token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut p = Program::Java {
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut p = Program::Java {
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classpath`
[INFO] [stdout]    --> src/lib.rs:140:45
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                             ^^^^^^^^^ help: try ignoring the field: `classpath: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classpath`
[INFO] [stdout]    --> src/lib.rs:140:45
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                             ^^^^^^^^^ help: try ignoring the field: `classpath: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classname`
[INFO] [stdout]    --> src/lib.rs:140:56
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                                        ^^^^^^^^^ help: try ignoring the field: `classname: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classname`
[INFO] [stdout]    --> src/lib.rs:140:56
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                                        ^^^^^^^^^ help: try ignoring the field: `classname: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut p = Program::Java {
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classpath`
[INFO] [stdout]    --> src/lib.rs:140:45
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                             ^^^^^^^^^ help: try ignoring the field: `classpath: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `classname`
[INFO] [stdout]    --> src/lib.rs:140:56
[INFO] [stdout]     |
[INFO] [stdout] 140 |         Program::Java{build_cwd, build_cmd, classpath, classname} => {
[INFO] [stdout]     |                                                        ^^^^^^^^^ help: try ignoring the field: `classname: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Python` and `Binary` are never constructed
[INFO] [stdout]   --> src/lib.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Program {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |   Python {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |   Binary {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Program` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Python` and `Binary` are never constructed
[INFO] [stdout]   --> src/lib.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Program {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |   Python {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |   Binary {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Program` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Python` and `Binary` are never constructed
[INFO] [stdout]   --> src/lib.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Program {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |   Python {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |   Binary {
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Program` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] [BUILD] got program Java { build_cwd: "/tmp/classes", build_cmd: ["javac", "Main.java"], classpath: ["/tmp/classes/"], classname: "Main" }
[INFO] [stdout] error: proc macro panicked
[INFO] [stdout]   --> examples/simple.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / system!{
[INFO] [stdout] 25 | |   MyApp,
[INFO] [stdout] 26 | |   java {
[INFO] [stdout] 27 | |     // Build data
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |   }
[INFO] [stdout] 34 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: message: Could not run process to compile java classes: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> examples/simple.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout] 6  | / /**
[INFO] [stdout] 7  | | # This shellcode creates the /tmp/classes/ folder.
[INFO] [stdout] 8  | | # For real projects this would be something like
[INFO] [stdout] 9  | | # build/classes/ from a gradle build/ directory.
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |
[INFO] [stdout] 21 | | */
[INFO] [stdout]    | |__^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MyApp`
[INFO] [stdout]   --> examples/simple.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |   let mut app = MyApp::default();
[INFO] [stdout]    |                 ^^^^^ use of undeclared type `MyApp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `system-system` (example "simple") due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e294ecc2681d3f437115ac5e5b81799580eec7ce9fa584a963231b62dab3b147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e294ecc2681d3f437115ac5e5b81799580eec7ce9fa584a963231b62dab3b147", kill_on_drop: false }`
[INFO] [stdout] e294ecc2681d3f437115ac5e5b81799580eec7ce9fa584a963231b62dab3b147
