[INFO] cloning repository https://github.com/27343sven/rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/27343sven/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F27343sven%2Frust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F27343sven%2Frust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34e78f56b67ce8fbad8c4ddb57024db7f8c649ae
[INFO] checking 27343sven/rust_exercises/34e78f56b67ce8fbad8c4ddb57024db7f8c649ae against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F27343sven%2Frust_exercises" "/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/27343sven/rust_exercises on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/27343sven/rust_exercises
[INFO] finished tweaking git repo https://github.com/27343sven/rust_exercises
[INFO] tweaked toml for git repo https://github.com/27343sven/rust_exercises written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/27343sven/rust_exercises 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded int-enum-impl v0.4.0
[INFO] [stderr]   Downloaded int-enum v0.4.0
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcaa57b4bb469a7c9284d125b66d12a96701a686531fcb6c37841186f0c2c52f
[INFO] running `Command { std: "docker" "start" "-a" "dcaa57b4bb469a7c9284d125b66d12a96701a686531fcb6c37841186f0c2c52f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcaa57b4bb469a7c9284d125b66d12a96701a686531fcb6c37841186f0c2c52f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcaa57b4bb469a7c9284d125b66d12a96701a686531fcb6c37841186f0c2c52f", kill_on_drop: false }`
[INFO] [stdout] dcaa57b4bb469a7c9284d125b66d12a96701a686531fcb6c37841186f0c2c52f
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c94ea1f85d4a1e1c39e5ee5141c4c48dbb1201d704ca52d3cdd8cd2da49d4798
[INFO] running `Command { std: "docker" "start" "-a" "c94ea1f85d4a1e1c39e5ee5141c4c48dbb1201d704ca52d3cdd8cd2da49d4798", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking fitbits v0.1.0 (/opt/rustwide/workdir/fitbits)
[INFO] [stderr]     Checking rust_oo v0.1.0 (/opt/rustwide/workdir/rust_oo)
[INFO] [stderr]     Checking smart_pointers v0.1.0 (/opt/rustwide/workdir/smart_pointers)
[INFO] [stderr]     Checking miniexcel v0.1.0 (/opt/rustwide/workdir/miniexcel)
[INFO] [stderr]     Checking blog v0.1.0 (/opt/rustwide/workdir/blog)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking structs v0.1.0 (/opt/rustwide/workdir/structs)
[INFO] [stderr]     Checking eq_resistance v0.1.0 (/opt/rustwide/workdir/eq_resistance)
[INFO] [stdout] warning: struct `MockMessenger` is never constructed
[INFO] [stdout]   --> smart_pointers/src/lib.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     struct MockMessenger {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> blog/src/lib.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> smart_pointers/src/lib.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     impl MockMessenger {
[INFO] [stdout]    |     ------------------ associated function in this implementation
[INFO] [stdout] 81 |         fn new() -> MockMessenger {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> blog/src/lib.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Rgb` is never constructed
[INFO] [stdout]   --> structs/src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | enum Color {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 46 |     Rgb(i32, i32, i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed
[INFO] [stdout]   --> structs/src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 50 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 51 |     Move{ x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 52 |     Write(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> eq_resistance/src/main.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 |             circuit: (),
[INFO] [stdout]    |                      ^^ expected `Node`, found `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> eq_resistance/src/main.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |             elements: (),
[INFO] [stdout]    |                       ^^ expected `HashMap<String, f64>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `HashMap<String, f64>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0384]: cannot assign twice to immutable variable `depth`
[INFO] [stdout]   --> eq_resistance/src/main.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let depth = 0;
[INFO] [stdout]    |             ----- first assignment to `depth`
[INFO] [stdout] ...
[INFO] [stdout] 77 |                     depth += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^ cannot assign twice to immutable variable
[INFO] [stdout]    |
[INFO] [stdout] help: consider making this binding mutable
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut depth = 0;
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0384]: cannot assign twice to immutable variable `depth`
[INFO] [stdout]   --> eq_resistance/src/main.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let depth = 0;
[INFO] [stdout]    |             ----- first assignment to `depth`
[INFO] [stdout] ...
[INFO] [stdout] 81 |                     depth += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^ cannot assign twice to immutable variable
[INFO] [stdout]    |
[INFO] [stdout] help: consider making this binding mutable
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut depth = 0;
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> miniexcel/src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> eq_resistance/src/main.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     for i in 0..n as usize {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> eq_resistance/src/main.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let name = inputs[0].trim().to_string();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> eq_resistance/src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let r = parse_input!(inputs[1], i32);
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `circuit`
[INFO] [stdout]    --> eq_resistance/src/main.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let circuit = input_line.trim_matches('\n').to_string();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_circuit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0384.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smart_pointers::List`
[INFO] [stdout]  --> smart_pointers/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use smart_pointers::List;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking assembly_line v0.1.0 (/opt/rustwide/workdir/assembly_line)
[INFO] [stderr]     Checking concurrency v0.1.0 (/opt/rustwide/workdir/concurrency)
[INFO] [stderr] error: could not compile `eq_resistance` (bin "eq_resistance") due to 5 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> miniexcel/src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smart_pointers::List`
[INFO] [stdout]  --> smart_pointers/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use smart_pointers::List;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c94ea1f85d4a1e1c39e5ee5141c4c48dbb1201d704ca52d3cdd8cd2da49d4798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94ea1f85d4a1e1c39e5ee5141c4c48dbb1201d704ca52d3cdd8cd2da49d4798", kill_on_drop: false }`
[INFO] [stdout] c94ea1f85d4a1e1c39e5ee5141c4c48dbb1201d704ca52d3cdd8cd2da49d4798