[INFO] cloning repository https://github.com/TanametTpk/rust-practice-again
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TanametTpk/rust-practice-again" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanametTpk%2Frust-practice-again", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanametTpk%2Frust-practice-again'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63d0e53bd5f2684d80489da899be3c5790388db3
[INFO] testing TanametTpk/rust-practice-again against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTanametTpk%2Frust-practice-again" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TanametTpk/rust-practice-again
[INFO] finished tweaking git repo https://github.com/TanametTpk/rust-practice-again
[INFO] tweaked toml for git repo https://github.com/TanametTpk/rust-practice-again written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TanametTpk/rust-practice-again on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TanametTpk/rust-practice-again 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8f0fae2fb47ef1737d03ce6a09a38f89b6474aa99f187e947f1d62e13e78c75
[INFO] running `Command { std: "docker" "start" "-a" "e8f0fae2fb47ef1737d03ce6a09a38f89b6474aa99f187e947f1d62e13e78c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8f0fae2fb47ef1737d03ce6a09a38f89b6474aa99f187e947f1d62e13e78c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f0fae2fb47ef1737d03ce6a09a38f89b6474aa99f187e947f1d62e13e78c75", kill_on_drop: false }`
[INFO] [stdout] e8f0fae2fb47ef1737d03ce6a09a38f89b6474aa99f187e947f1d62e13e78c75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 627f676fc2f1cfcabc9f0bcd927af293f2c530372dd0c83dc1c813c1c2c27908
[INFO] running `Command { std: "docker" "start" "-a" "627f676fc2f1cfcabc9f0bcd927af293f2c530372dd0c83dc1c813c1c2c27908", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `type_var`
[INFO] [stdout]  --> src/variables/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let type_var: u8 = 5;
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_var`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable_var` is never read
[INFO] [stdout]  --> src/variables/mod.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut mutable_var = 2;
[INFO] [stdout]   |             ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_boolean`
[INFO] [stdout]   --> src/variables/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let a_boolean: bool = true;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_boolean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]   --> src/variables/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let character: char = 't';
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/variables/mod.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s = "testing".to_string();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/collections/mod.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/collections/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> src/ownership/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let s2 = s1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "627f676fc2f1cfcabc9f0bcd927af293f2c530372dd0c83dc1c813c1c2c27908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "627f676fc2f1cfcabc9f0bcd927af293f2c530372dd0c83dc1c813c1c2c27908", kill_on_drop: false }`
[INFO] [stdout] 627f676fc2f1cfcabc9f0bcd927af293f2c530372dd0c83dc1c813c1c2c27908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3394fe8d5f81cc025f42c7c6b15c13171d06bcf7d33128fa4de37c42c41c3116
[INFO] running `Command { std: "docker" "start" "-a" "3394fe8d5f81cc025f42c7c6b15c13171d06bcf7d33128fa4de37c42c41c3116", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `type_var`
[INFO] [stdout]  --> src/variables/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let type_var: u8 = 5;
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_var`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable_var` is never read
[INFO] [stdout]  --> src/variables/mod.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut mutable_var = 2;
[INFO] [stdout]   |             ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_boolean`
[INFO] [stdout]   --> src/variables/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let a_boolean: bool = true;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_boolean`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]   --> src/variables/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let character: char = 't';
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/variables/mod.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s = "testing".to_string();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/collections/mod.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/collections/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> src/ownership/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let s2 = s1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "3394fe8d5f81cc025f42c7c6b15c13171d06bcf7d33128fa4de37c42c41c3116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3394fe8d5f81cc025f42c7c6b15c13171d06bcf7d33128fa4de37c42c41c3116", kill_on_drop: false }`
[INFO] [stdout] 3394fe8d5f81cc025f42c7c6b15c13171d06bcf7d33128fa4de37c42c41c3116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3c09b2c07603392d37e125e85007709de3b345ea4c2f16fc9549f000a0e40e25
[INFO] running `Command { std: "docker" "start" "-a" "3c09b2c07603392d37e125e85007709de3b345ea4c2f16fc9549f000a0e40e25", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `type_var`
[INFO] [stderr]  --> src/variables/mod.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let type_var: u8 = 5;
[INFO] [stderr]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_var`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `mutable_var` is never read
[INFO] [stderr]  --> src/variables/mod.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut mutable_var = 2;
[INFO] [stderr]   |             ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a_boolean`
[INFO] [stderr]   --> src/variables/mod.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let a_boolean: bool = true;
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_boolean`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `character`
[INFO] [stderr]   --> src/variables/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let character: char = 't';
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/variables/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let s = "testing".to_string();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/collections/mod.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/collections/mod.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut v: Vec<i32> = Vec::new();
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s2`
[INFO] [stderr]   --> src/ownership/mod.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let s2 = s1;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (bin "rust-practice" test) generated 8 warnings (run `cargo fix --bin "rust-practice" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_practice-f78354f7a004a50f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3c09b2c07603392d37e125e85007709de3b345ea4c2f16fc9549f000a0e40e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c09b2c07603392d37e125e85007709de3b345ea4c2f16fc9549f000a0e40e25", kill_on_drop: false }`
[INFO] [stdout] 3c09b2c07603392d37e125e85007709de3b345ea4c2f16fc9549f000a0e40e25