[INFO] cloning repository https://github.com/torbatti/myRustJourney-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torbatti/myRustJourney-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorbatti%2FmyRustJourney-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorbatti%2FmyRustJourney-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a46b43810c27c0074f4302468105abed66d0d324
[INFO] testing torbatti/myRustJourney-learning against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorbatti%2FmyRustJourney-learning" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torbatti/myRustJourney-learning on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torbatti/myRustJourney-learning
[INFO] finished tweaking git repo https://github.com/torbatti/myRustJourney-learning
[INFO] tweaked toml for git repo https://github.com/torbatti/myRustJourney-learning written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate git repo https://github.com/torbatti/myRustJourney-learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75ed0d2fc6a8d3c328bd79732200d85aa72e2a1fd36fd784935684473d0c8a4a
[INFO] running `Command { std: "docker" "start" "-a" "75ed0d2fc6a8d3c328bd79732200d85aa72e2a1fd36fd784935684473d0c8a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75ed0d2fc6a8d3c328bd79732200d85aa72e2a1fd36fd784935684473d0c8a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75ed0d2fc6a8d3c328bd79732200d85aa72e2a1fd36fd784935684473d0c8a4a", kill_on_drop: false }`
[INFO] [stdout] 75ed0d2fc6a8d3c328bd79732200d85aa72e2a1fd36fd784935684473d0c8a4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83ba435219a9826cc1e969d6c1c9270951f1d989c0098d5386c1c8f5349389ea
[INFO] running `Command { std: "docker" "start" "-a" "83ba435219a9826cc1e969d6c1c9270951f1d989c0098d5386c1c8f5349389ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learn v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/declaring_first.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let b = 3;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `analyze_slice`
[INFO] [stdout]   --> src/arrays_slices.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/arrays_slices.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn run() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/declaring_first.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.64s
[INFO] running `Command { std: "docker" "inspect" "83ba435219a9826cc1e969d6c1c9270951f1d989c0098d5386c1c8f5349389ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83ba435219a9826cc1e969d6c1c9270951f1d989c0098d5386c1c8f5349389ea", kill_on_drop: false }`
[INFO] [stdout] 83ba435219a9826cc1e969d6c1c9270951f1d989c0098d5386c1c8f5349389ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61dd2f1828c92014cdd413f483c7120534ff7913f1b19bb739509cadfaf776a9
[INFO] running `Command { std: "docker" "start" "-a" "61dd2f1828c92014cdd413f483c7120534ff7913f1b19bb739509cadfaf776a9", 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]    Compiling learn v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/declaring_first.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let b = 3;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `analyze_slice`
[INFO] [stdout]   --> src/arrays_slices.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/arrays_slices.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn run() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]  --> src/declaring_first.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "61dd2f1828c92014cdd413f483c7120534ff7913f1b19bb739509cadfaf776a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61dd2f1828c92014cdd413f483c7120534ff7913f1b19bb739509cadfaf776a9", kill_on_drop: false }`
[INFO] [stdout] 61dd2f1828c92014cdd413f483c7120534ff7913f1b19bb739509cadfaf776a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 241115b8a107b970c907a8a377cefffd3d26a2780b363bf20f137bb34eb8dde4
[INFO] running `Command { std: "docker" "start" "-a" "241115b8a107b970c907a8a377cefffd3d26a2780b363bf20f137bb34eb8dde4", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/declaring_first.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let b = 3;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `analyze_slice`
[INFO] [stderr]   --> src/arrays_slices.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn analyze_slice(slice: &[i32]) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/arrays_slices.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn run() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/declaring_first.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `learn` (bin "learn" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-111fdd40dfdeeb47)
[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" "241115b8a107b970c907a8a377cefffd3d26a2780b363bf20f137bb34eb8dde4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241115b8a107b970c907a8a377cefffd3d26a2780b363bf20f137bb34eb8dde4", kill_on_drop: false }`
[INFO] [stdout] 241115b8a107b970c907a8a377cefffd3d26a2780b363bf20f137bb34eb8dde4