[INFO] cloning repository https://github.com/ZPTX4869/lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZPTX4869/lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZPTX4869%2Flists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZPTX4869%2Flists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a309621a7f9854854aca9ddc52bc7828569e331a
[INFO] checking ZPTX4869/lists against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZPTX4869%2Flists" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZPTX4869/lists on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZPTX4869/lists
[INFO] finished tweaking git repo https://github.com/ZPTX4869/lists
[INFO] tweaked toml for git repo https://github.com/ZPTX4869/lists written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/ZPTX4869/lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3f4d6898884aaf287a799afab991f3bfd2b8302a8d77b38e9c6e174286bf39f
[INFO] running `Command { std: "docker" "start" "-a" "a3f4d6898884aaf287a799afab991f3bfd2b8302a8d77b38e9c6e174286bf39f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3f4d6898884aaf287a799afab991f3bfd2b8302a8d77b38e9c6e174286bf39f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3f4d6898884aaf287a799afab991f3bfd2b8302a8d77b38e9c6e174286bf39f", kill_on_drop: false }`
[INFO] [stdout] a3f4d6898884aaf287a799afab991f3bfd2b8302a8d77b38e9c6e174286bf39f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc164aa0b0a439c35530a9f828b3911b611c04103ce2fc05a069c0868fba0f6f
[INFO] running `Command { std: "docker" "start" "-a" "cc164aa0b0a439c35530a9f828b3911b611c04103ce2fc05a069c0868fba0f6f", kill_on_drop: false }`
[INFO] [stderr]     Checking lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn consume(a: String) {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn consume(a: String) {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_a`
[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/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut a = "hello".to_string();
[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/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut a = "hello".to_string();
[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] error[E0505]: cannot move out of `a` because it is borrowed
[INFO] [stdout]   --> src/main.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 8  |     let b = &a;
[INFO] [stdout]    |             -- borrow of `a` occurs here
[INFO] [stdout] 9  |     {
[INFO] [stdout] 10 |         consume(a);
[INFO] [stdout]    |                 ^ move out of `a` occurs here
[INFO] [stdout] 11 |     }
[INFO] [stdout] 12 |     println!("{}", b)
[INFO] [stdout]    |                    - borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0505]: cannot move out of `a` because it is borrowed
[INFO] [stdout]   --> src/main.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 8  |     let b = &a;
[INFO] [stdout]    |             -- borrow of `a` occurs here
[INFO] [stdout] 9  |     {
[INFO] [stdout] 10 |         consume(a);
[INFO] [stdout]    |                 ^ move out of `a` occurs here
[INFO] [stdout] 11 |     }
[INFO] [stdout] 12 |     println!("{}", b)
[INFO] [stdout]    |                    - borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0505`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lists` due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cc164aa0b0a439c35530a9f828b3911b611c04103ce2fc05a069c0868fba0f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc164aa0b0a439c35530a9f828b3911b611c04103ce2fc05a069c0868fba0f6f", kill_on_drop: false }`
[INFO] [stdout] cc164aa0b0a439c35530a9f828b3911b611c04103ce2fc05a069c0868fba0f6f