[INFO] cloning repository https://github.com/juanitoddd/Rust-Learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juanitoddd/Rust-Learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuanitoddd%2FRust-Learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuanitoddd%2FRust-Learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff7e093c40473cf2da1794da91bf0ca202d2a980
[INFO] testing juanitoddd/Rust-Learning 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%2Fjuanitoddd%2FRust-Learning" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juanitoddd/Rust-Learning 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/juanitoddd/Rust-Learning
[INFO] finished tweaking git repo https://github.com/juanitoddd/Rust-Learning
[INFO] tweaked toml for git repo https://github.com/juanitoddd/Rust-Learning written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/juanitoddd/Rust-Learning 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] d309fd74266e7737ce6608bb34c301912fedb984c80ad29f644fd9e96aeb7a6f
[INFO] running `Command { std: "docker" "start" "-a" "d309fd74266e7737ce6608bb34c301912fedb984c80ad29f644fd9e96aeb7a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d309fd74266e7737ce6608bb34c301912fedb984c80ad29f644fd9e96aeb7a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d309fd74266e7737ce6608bb34c301912fedb984c80ad29f644fd9e96aeb7a6f", kill_on_drop: false }`
[INFO] [stdout] d309fd74266e7737ce6608bb34c301912fedb984c80ad29f644fd9e96aeb7a6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] 0624a21021ee7a803ae4eea08c610eb4d77177431bb51713b41ba32df731acbf
[INFO] running `Command { std: "docker" "start" "-a" "0624a21021ee7a803ae4eea08c610eb4d77177431bb51713b41ba32df731acbf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling ppv-lite86 v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `f`
[INFO] [stdout]  --> src/lifetimes/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn f(s: &str) -> &str {
[INFO] [stdout]   |    ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.70s
[INFO] running `Command { std: "docker" "inspect" "0624a21021ee7a803ae4eea08c610eb4d77177431bb51713b41ba32df731acbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0624a21021ee7a803ae4eea08c610eb4d77177431bb51713b41ba32df731acbf", kill_on_drop: false }`
[INFO] [stdout] 0624a21021ee7a803ae4eea08c610eb4d77177431bb51713b41ba32df731acbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] a895e2af60d764328f50731ef427eb4cbdf3199b26e1d5d4c0fc6285d0cfe64a
[INFO] running `Command { std: "docker" "start" "-a" "a895e2af60d764328f50731ef427eb4cbdf3199b26e1d5d4c0fc6285d0cfe64a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `f`
[INFO] [stdout]  --> src/lifetimes/mod.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn f(s: &str) -> &str {
[INFO] [stdout]   |    ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `updateRef` should have a snake case name
[INFO] [stdout]   --> examples/borrow.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |  fn updateRef(arr:&mut [i32;3]){
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to snake case: `update_ref`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "a895e2af60d764328f50731ef427eb4cbdf3199b26e1d5d4c0fc6285d0cfe64a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a895e2af60d764328f50731ef427eb4cbdf3199b26e1d5d4c0fc6285d0cfe64a", kill_on_drop: false }`
[INFO] [stdout] a895e2af60d764328f50731ef427eb4cbdf3199b26e1d5d4c0fc6285d0cfe64a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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] 18a100a40357b6293f44f9dae53cb5855ed553496bb1bcd70414a44ce027eceb
[INFO] running `Command { std: "docker" "start" "-a" "18a100a40357b6293f44f9dae53cb5855ed553496bb1bcd70414a44ce027eceb", kill_on_drop: false }`
[INFO] [stderr] warning: function `updateRef` should have a snake case name
[INFO] [stderr]   --> examples/borrow.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |  fn updateRef(arr:&mut [i32;3]){
[INFO] [stderr]    |     ^^^^^^^^^ help: convert the identifier to snake case: `update_ref`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `f`
[INFO] [stderr]  --> src/lifetimes/mod.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn f(s: &str) -> &str {
[INFO] [stderr]   |    ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learn` (example "borrow") generated 1 warning
[INFO] [stderr] warning: `learn` (bin "learn" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-1d7a1ba7f7e4e238)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-06d80752bb78c433)
[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] [stderr]    Doc-tests learn
[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" "18a100a40357b6293f44f9dae53cb5855ed553496bb1bcd70414a44ce027eceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a100a40357b6293f44f9dae53cb5855ed553496bb1bcd70414a44ce027eceb", kill_on_drop: false }`
[INFO] [stdout] 18a100a40357b6293f44f9dae53cb5855ed553496bb1bcd70414a44ce027eceb