[INFO] cloning repository https://github.com/fewwwww/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fewwwww/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffewwwww%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffewwwww%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d7b50068aafbdd15742f8bf0a7e51e2c8c55a01
[INFO] testing fewwwww/learn-rust against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffewwwww%2Flearn-rust" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fewwwww/learn-rust on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fewwwww/learn-rust
[INFO] finished tweaking git repo https://github.com/fewwwww/learn-rust
[INFO] tweaked toml for git repo https://github.com/fewwwww/learn-rust written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/fewwwww/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8168a5ff63d97e0c5f5cdbf8bec55afac802caa901c3bb447e87536331f9202
[INFO] running `Command { std: "docker" "start" "-a" "e8168a5ff63d97e0c5f5cdbf8bec55afac802caa901c3bb447e87536331f9202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8168a5ff63d97e0c5f5cdbf8bec55afac802caa901c3bb447e87536331f9202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8168a5ff63d97e0c5f5cdbf8bec55afac802caa901c3bb447e87536331f9202", kill_on_drop: false }`
[INFO] [stdout] e8168a5ff63d97e0c5f5cdbf8bec55afac802caa901c3bb447e87536331f9202
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5736badf92ffac7301dc78f0523f742d84170f9d2552d5a4880b818f113ae8dd
[INFO] running `Command { std: "docker" "start" "-a" "5736badf92ffac7301dc78f0523f742d84170f9d2552d5a4880b818f113ae8dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:53:46
[INFO] [stdout]    |
[INFO] [stdout] 53 |     struct Classic {name: String, age: usize};
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut b = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let number: u32 = 100;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `declare_arr`
[INFO] [stdout]   --> src/main.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let declare_arr = [0; 5];
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_declare_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]   --> src/main.rs:53:35
[INFO] [stdout]    |
[INFO] [stdout] 53 |     struct Classic {name: String, age: usize};
[INFO] [stdout]    |                                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Unit`
[INFO] [stdout]   --> src/main.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     struct Unit;
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Transmission`
[INFO] [stdout]   --> src/main.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |     enum Transmission {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isBigger` should have a snake case name
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let isBigger: bool = 2 > 1;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `is_bigger`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `calcResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let calcResult: u32 = 1 + 2 - 3 * 2 / 2;
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `calc_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "5736badf92ffac7301dc78f0523f742d84170f9d2552d5a4880b818f113ae8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5736badf92ffac7301dc78f0523f742d84170f9d2552d5a4880b818f113ae8dd", kill_on_drop: false }`
[INFO] [stdout] 5736badf92ffac7301dc78f0523f742d84170f9d2552d5a4880b818f113ae8dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 210e2a30fde7337786f405187ae1904b2586f6e2bfaf37568d099ed903191c6f
[INFO] running `Command { std: "docker" "start" "-a" "210e2a30fde7337786f405187ae1904b2586f6e2bfaf37568d099ed903191c6f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:53:46
[INFO] [stdout]    |
[INFO] [stdout] 53 |     struct Classic {name: String, age: usize};
[INFO] [stdout]    |                                              ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut b = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let number: u32 = 100;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `declare_arr`
[INFO] [stdout]   --> src/main.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let declare_arr = [0; 5];
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_declare_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isBigger` should have a snake case name
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let isBigger: bool = 2 > 1;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `is_bigger`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `calcResult` should have a snake case name
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let calcResult: u32 = 1 + 2 - 3 * 2 / 2;
[INFO] [stdout]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `calc_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rs-1d2ea6bfa9313ac9)
[INFO] running `Command { std: "docker" "inspect" "210e2a30fde7337786f405187ae1904b2586f6e2bfaf37568d099ed903191c6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "210e2a30fde7337786f405187ae1904b2586f6e2bfaf37568d099ed903191c6f", kill_on_drop: false }`
[INFO] [stdout] 210e2a30fde7337786f405187ae1904b2586f6e2bfaf37568d099ed903191c6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a2248d32eba99d1f24370d7684f0934d1f0704d6364e825de875478d695fe266
[INFO] running `Command { std: "docker" "start" "-a" "a2248d32eba99d1f24370d7684f0934d1f0704d6364e825de875478d695fe266", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/main.rs:53:46
[INFO] [stderr]    |
[INFO] [stderr] 53 |     struct Classic {name: String, age: usize};
[INFO] [stderr]    |                                              ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `b` is never read
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut b = 1;
[INFO] [stderr]   |             ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `number`
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let number: u32 = 100;
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `declare_arr`
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:76:9
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 76 |     let declare_arr = [0; 5];
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_declare_arr`
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isBigger` should have a snake case name
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let isBigger: bool = 2 > 1;
[INFO] [stderr]    |         ^^^^^^^^ help: convert the identifier to snake case: `is_bigger`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `calcResult` should have a snake case name
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let calcResult: u32 = 1 + 2 - 3 * 2 / 2;
[INFO] [stderr]    |         ^^^^^^^^^^ help: convert the identifier to snake case: `calc_result`
[INFO] [stderr] 
[INFO] [stderr] warning: `rs` (bin "rs" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rs-1d2ea6bfa9313ac9)
[INFO] running `Command { std: "docker" "inspect" "a2248d32eba99d1f24370d7684f0934d1f0704d6364e825de875478d695fe266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2248d32eba99d1f24370d7684f0934d1f0704d6364e825de875478d695fe266", kill_on_drop: false }`
[INFO] [stdout] a2248d32eba99d1f24370d7684f0934d1f0704d6364e825de875478d695fe266