[INFO] cloning repository https://github.com/ppamorim/fibonacci-sequence-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ppamorim/fibonacci-sequence-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppamorim%2Ffibonacci-sequence-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppamorim%2Ffibonacci-sequence-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d827edb79304f20f3c8982ae3b0644f019875560
[INFO] testing ppamorim/fibonacci-sequence-rs against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fppamorim%2Ffibonacci-sequence-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ppamorim/fibonacci-sequence-rs on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ppamorim/fibonacci-sequence-rs
[INFO] finished tweaking git repo https://github.com/ppamorim/fibonacci-sequence-rs
[INFO] tweaked toml for git repo https://github.com/ppamorim/fibonacci-sequence-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ppamorim/fibonacci-sequence-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d059da61bd312e8efb4a660d8120bbde17458e01b7b42adcb0db5cb383cce49c
[INFO] running `Command { std: "docker" "start" "-a" "d059da61bd312e8efb4a660d8120bbde17458e01b7b42adcb0db5cb383cce49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d059da61bd312e8efb4a660d8120bbde17458e01b7b42adcb0db5cb383cce49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d059da61bd312e8efb4a660d8120bbde17458e01b7b42adcb0db5cb383cce49c", kill_on_drop: false }`
[INFO] [stdout] d059da61bd312e8efb4a660d8120bbde17458e01b7b42adcb0db5cb383cce49c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee5f73a7ba09797463024fa8a5b4438ad0e103dc1c5f013285fe2d1b50c39979
[INFO] running `Command { std: "docker" "start" "-a" "ee5f73a7ba09797463024fa8a5b4438ad0e103dc1c5f013285fe2d1b50c39979", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling bigNumber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `thread`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{ thread, sync::{ Arc, Mutex }};
[INFO] [stdout]   |            ^^^^^^          ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `self`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, BufRead};
[INFO] [stdout]   |               ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryRecvError`, `self`
[INFO] [stdout]  --> src/main.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::{self, TryRecvError};
[INFO] [stdout]   |                       ^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result1`
[INFO] [stdout]   --> src/main.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 |   let result1 = fib4(n/3);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result2`
[INFO] [stdout]   --> src/main.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 |   let result2 = fib4(n/2);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result3`
[INFO] [stdout]   --> src/main.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |   let result3 = fib4(n);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `bigNumber` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `big_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "ee5f73a7ba09797463024fa8a5b4438ad0e103dc1c5f013285fe2d1b50c39979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5f73a7ba09797463024fa8a5b4438ad0e103dc1c5f013285fe2d1b50c39979", kill_on_drop: false }`
[INFO] [stdout] ee5f73a7ba09797463024fa8a5b4438ad0e103dc1c5f013285fe2d1b50c39979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2fe49193a59f7452bc4628fc0f10f841c5663c5f513244e94305d7e3e97c5c8
[INFO] running `Command { std: "docker" "start" "-a" "e2fe49193a59f7452bc4628fc0f10f841c5663c5f513244e94305d7e3e97c5c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bigNumber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `thread`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{ thread, sync::{ Arc, Mutex }};
[INFO] [stdout]   |            ^^^^^^          ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `self`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, BufRead};
[INFO] [stdout]   |               ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryRecvError`, `self`
[INFO] [stdout]  --> src/main.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::{self, TryRecvError};
[INFO] [stdout]   |                       ^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result1`
[INFO] [stdout]   --> src/main.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 |   let result1 = fib4(n/3);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result2`
[INFO] [stdout]   --> src/main.rs:76:7
[INFO] [stdout]    |
[INFO] [stdout] 76 |   let result2 = fib4(n/2);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result3`
[INFO] [stdout]   --> src/main.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |   let result3 = fib4(n);
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `bigNumber` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `big_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "e2fe49193a59f7452bc4628fc0f10f841c5663c5f513244e94305d7e3e97c5c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2fe49193a59f7452bc4628fc0f10f841c5663c5f513244e94305d7e3e97c5c8", kill_on_drop: false }`
[INFO] [stdout] e2fe49193a59f7452bc4628fc0f10f841c5663c5f513244e94305d7e3e97c5c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f3b8484d4a0529e5c10b60f1c5639735019cd09cdbe14a63cb71f49d0a5d3eb
[INFO] running `Command { std: "docker" "start" "-a" "2f3b8484d4a0529e5c10b60f1c5639735019cd09cdbe14a63cb71f49d0a5d3eb", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::mem::replace`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem::replace;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`, `thread`
[INFO] [stderr]  --> src/main.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::{ thread, sync::{ Arc, Mutex }};
[INFO] [stderr]   |            ^^^^^^          ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `self`
[INFO] [stderr]  --> src/main.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{self, BufRead};
[INFO] [stderr]   |               ^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `TryRecvError`, `self`
[INFO] [stderr]  --> src/main.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::{self, TryRecvError};
[INFO] [stderr]   |                       ^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result1`
[INFO] [stderr]   --> src/main.rs:75:7
[INFO] [stderr]    |
[INFO] [stderr] 75 |   let result1 = fib4(n/3);
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result2`
[INFO] [stderr]   --> src/main.rs:76:7
[INFO] [stderr]    |
[INFO] [stderr] 76 |   let result2 = fib4(n/2);
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result3`
[INFO] [stderr]   --> src/main.rs:77:7
[INFO] [stderr]    |
[INFO] [stderr] 77 |   let result3 = fib4(n);
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result3`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `bigNumber` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `big_number`
[INFO] [stderr] 
[INFO] [stderr] warning: `bigNumber` (bin "bigNumber" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bigNumber-4727f9487f42d88c)
[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" "2f3b8484d4a0529e5c10b60f1c5639735019cd09cdbe14a63cb71f49d0a5d3eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f3b8484d4a0529e5c10b60f1c5639735019cd09cdbe14a63cb71f49d0a5d3eb", kill_on_drop: false }`
[INFO] [stdout] 2f3b8484d4a0529e5c10b60f1c5639735019cd09cdbe14a63cb71f49d0a5d3eb