[INFO] fetching crate andersonpgrep 0.1.0...
[INFO] checking andersonpgrep-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate andersonpgrep 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate andersonpgrep 0.1.0
[INFO] finished tweaking crates.io crate andersonpgrep 0.1.0
[INFO] tweaked toml for crates.io crate andersonpgrep 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate andersonpgrep 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate andersonpgrep 0.1.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fa4d1b156be0fd9991ea62e70cf8bc6099bccfbe825d94933941cb333997e2b
[INFO] running `Command { std: "docker" "start" "-a" "9fa4d1b156be0fd9991ea62e70cf8bc6099bccfbe825d94933941cb333997e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa4d1b156be0fd9991ea62e70cf8bc6099bccfbe825d94933941cb333997e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa4d1b156be0fd9991ea62e70cf8bc6099bccfbe825d94933941cb333997e2b", kill_on_drop: false }`
[INFO] [stdout] 9fa4d1b156be0fd9991ea62e70cf8bc6099bccfbe825d94933941cb333997e2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fdc97223a0c76bc10b906329acb36f5de839ba1d73f97898e54fc2084568585
[INFO] running `Command { std: "docker" "start" "-a" "5fdc97223a0c76bc10b906329acb36f5de839ba1d73f97898e54fc2084568585", kill_on_drop: false }`
[INFO] [stderr]     Checking andersonpgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let expensive_closure = |num : u32| -> u32 {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_closure`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let add_one_closure = |x: u32| -> u32 {x + 1};
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let add_one  = |x: usize|  x + 1;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_three`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let add_one_three  = |x: usize|  {x + 1};
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_three`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut list = vec![1,2,3,4];
[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: `total`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let total: i32 = v_iter.sum(); // after this line, we are not able to use v_iter because it has
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_total`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let v2: Vec<_> = v.iter().map(|x| x + 3).collect();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `od_nums`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let od_nums: Vec<_> = v3.iter().filter(|x| (**x) & 1 == 1).collect();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_od_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]  --> src/closures_and_iterators/iterators.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Shoe {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expensive_closure`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let expensive_closure = |num : u32| -> u32 {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expensive_closure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_closure`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let add_one_closure = |x: u32| -> u32 {x + 1};
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_closure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let add_one  = |x: usize|  x + 1;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add_one_three`
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let add_one_three  = |x: usize|  {x + 1};
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_add_one_three`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/closures_and_iterators/closures.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mut list = vec![1,2,3,4];
[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: `total`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let total: i32 = v_iter.sum(); // after this line, we are not able to use v_iter because it has
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_total`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let v2: Vec<_> = v.iter().map(|x| x + 3).collect();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `od_nums`
[INFO] [stdout]   --> src/closures_and_iterators/iterators.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let od_nums: Vec<_> = v3.iter().filter(|x| (**x) & 1 == 1).collect();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_od_nums`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]  --> src/closures_and_iterators/iterators.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Shoe {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "5fdc97223a0c76bc10b906329acb36f5de839ba1d73f97898e54fc2084568585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fdc97223a0c76bc10b906329acb36f5de839ba1d73f97898e54fc2084568585", kill_on_drop: false }`
[INFO] [stdout] 5fdc97223a0c76bc10b906329acb36f5de839ba1d73f97898e54fc2084568585