[INFO] cloning repository https://github.com/xiaolitongxue666/different_type_closures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiaolitongxue666/different_type_closures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaolitongxue666%2Fdifferent_type_closures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaolitongxue666%2Fdifferent_type_closures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c740f9f1ed59164f25d28b0b594d5cd4fc40533
[INFO] testing xiaolitongxue666/different_type_closures against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiaolitongxue666%2Fdifferent_type_closures" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xiaolitongxue666/different_type_closures on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xiaolitongxue666/different_type_closures
[INFO] finished tweaking git repo https://github.com/xiaolitongxue666/different_type_closures
[INFO] tweaked toml for git repo https://github.com/xiaolitongxue666/different_type_closures written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/xiaolitongxue666/different_type_closures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae73d031e82237580416b1e89de09e3a5afa83d6fc0473013a95c66950eb2b9b
[INFO] running `Command { std: "docker" "start" "-a" "ae73d031e82237580416b1e89de09e3a5afa83d6fc0473013a95c66950eb2b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae73d031e82237580416b1e89de09e3a5afa83d6fc0473013a95c66950eb2b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae73d031e82237580416b1e89de09e3a5afa83d6fc0473013a95c66950eb2b9b", kill_on_drop: false }`
[INFO] [stdout] ae73d031e82237580416b1e89de09e3a5afa83d6fc0473013a95c66950eb2b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c19d16fde0e9e4f6456051e2bf93a0cf9fc2762120368b65b1308b546f09d12d
[INFO] running `Command { std: "docker" "start" "-a" "c19d16fde0e9e4f6456051e2bf93a0cf9fc2762120368b65b1308b546f09d12d", kill_on_drop: false }`
[INFO] [stderr]    Compiling different_type_closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `MyStruct`
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct MyStruct {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new (text: &'static str, number: u32) -> MyStruct {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_number`
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn get_number(&self)-> u32{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `inc_number`
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn inc_number (&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destructor`
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn destructor (self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_fn`
[INFO] [stdout]   --> src/main.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn is_fn <A, R>(_x: fn(A) -> R) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_Fn`
[INFO] [stdout]   --> src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn is_Fn <A, R, F: Fn(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_FnMut`
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_FnOnce`
[INFO] [stdout]   --> src/main.rs:27:53
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |                                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_Fn` should have a snake case name
[INFO] [stdout]   --> src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn is_Fn <A, R, F: Fn(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^ help: convert the identifier to snake case (notice the capitalization): `is_fn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_FnMut` should have a snake case name
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `is_fn_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_FnOnce` should have a snake case name
[INFO] [stdout]   --> src/main.rs:27:53
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |                                                     ^^^^^^^^^ help: convert the identifier to snake case: `is_fn_once`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "c19d16fde0e9e4f6456051e2bf93a0cf9fc2762120368b65b1308b546f09d12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c19d16fde0e9e4f6456051e2bf93a0cf9fc2762120368b65b1308b546f09d12d", kill_on_drop: false }`
[INFO] [stdout] c19d16fde0e9e4f6456051e2bf93a0cf9fc2762120368b65b1308b546f09d12d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c82d597411fc80847dcb864d49b1b2cdf142932b5fc2a2beb0a9b2e022bb4986
[INFO] running `Command { std: "docker" "start" "-a" "c82d597411fc80847dcb864d49b1b2cdf142932b5fc2a2beb0a9b2e022bb4986", kill_on_drop: false }`
[INFO] [stderr]    Compiling different_type_closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `is_Fn` should have a snake case name
[INFO] [stdout]   --> src/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn is_Fn <A, R, F: Fn(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^ help: convert the identifier to snake case (notice the capitalization): `is_fn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_FnMut` should have a snake case name
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `is_fn_mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_FnOnce` should have a snake case name
[INFO] [stdout]   --> src/main.rs:27:53
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stdout]    |                                                     ^^^^^^^^^ help: convert the identifier to snake case: `is_fn_once`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "c82d597411fc80847dcb864d49b1b2cdf142932b5fc2a2beb0a9b2e022bb4986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82d597411fc80847dcb864d49b1b2cdf142932b5fc2a2beb0a9b2e022bb4986", kill_on_drop: false }`
[INFO] [stdout] c82d597411fc80847dcb864d49b1b2cdf142932b5fc2a2beb0a9b2e022bb4986
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a3f2a8bffeafd085ade0a4708394dda1f14b566161b66a95418ddcf3414ad09
[INFO] running `Command { std: "docker" "start" "-a" "2a3f2a8bffeafd085ade0a4708394dda1f14b566161b66a95418ddcf3414ad09", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: function `is_Fn` should have a snake case name
[INFO] [stdout] running 4 tests
[INFO] [stderr]   --> src/main.rs:26:4
[INFO] [stdout] test closure1_test ... ok
[INFO] [stderr]    |
[INFO] [stdout] test closure2_test ... ok
[INFO] [stderr] 26 | fn is_Fn <A, R, F: Fn(A) -> R> (_x: &F) {}
[INFO] [stdout] test closure3_test ... ok
[INFO] [stderr]    |    ^^^^^ help: convert the identifier to snake case (notice the capitalization): `is_fn`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_FnMut` should have a snake case name
[INFO] [stderr]   --> src/main.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stderr]    |    ^^^^^^^^ help: convert the identifier to snake case: `is_fn_mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_FnOnce` should have a snake case name
[INFO] [stderr]   --> src/main.rs:27:53
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn is_FnMut <A, R, F: FnMut(A) -> R> (_x: &F) {} fn is_FnOnce <A, R, F: FnOnce(A) -> R> (_x: &F) {}
[INFO] [stderr]    |                                                     ^^^^^^^^^ help: convert the identifier to snake case: `is_fn_once`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/different_type_closures-88878e4d1372c687)
[INFO] [stdout] test closure4_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a3f2a8bffeafd085ade0a4708394dda1f14b566161b66a95418ddcf3414ad09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a3f2a8bffeafd085ade0a4708394dda1f14b566161b66a95418ddcf3414ad09", kill_on_drop: false }`
[INFO] [stdout] 2a3f2a8bffeafd085ade0a4708394dda1f14b566161b66a95418ddcf3414ad09