[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 1.59.0 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-55/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juanitoddd/Rust-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/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-55/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" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] 49daae9d6a904b0846c7ea1bdf7a5117712cdc60c39439dbab9ec17e91bf3bee
[INFO] running `Command { std: "docker" "start" "-a" "49daae9d6a904b0846c7ea1bdf7a5117712cdc60c39439dbab9ec17e91bf3bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49daae9d6a904b0846c7ea1bdf7a5117712cdc60c39439dbab9ec17e91bf3bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49daae9d6a904b0846c7ea1bdf7a5117712cdc60c39439dbab9ec17e91bf3bee", kill_on_drop: false }`
[INFO] [stdout] 49daae9d6a904b0846c7ea1bdf7a5117712cdc60c39439dbab9ec17e91bf3bee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] 8ff7e1deb03653be0eaec49f3fa5d2793ce3ad2059a7ab1e95f0c78072c96065
[INFO] running `Command { std: "docker" "start" "-a" "8ff7e1deb03653be0eaec49f3fa5d2793ce3ad2059a7ab1e95f0c78072c96065", 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 5.56s
[INFO] running `Command { std: "docker" "inspect" "8ff7e1deb03653be0eaec49f3fa5d2793ce3ad2059a7ab1e95f0c78072c96065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ff7e1deb03653be0eaec49f3fa5d2793ce3ad2059a7ab1e95f0c78072c96065", kill_on_drop: false }`
[INFO] [stdout] 8ff7e1deb03653be0eaec49f3fa5d2793ce3ad2059a7ab1e95f0c78072c96065
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] 4da77d2ddc2925672fb163e7c6bdfb0b71bb43b7c343d8a4d771c6e038cd165f
[INFO] running `Command { std: "docker" "start" "-a" "4da77d2ddc2925672fb163e7c6bdfb0b71bb43b7c343d8a4d771c6e038cd165f", kill_on_drop: false }`
[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 1.35s
[INFO] running `Command { std: "docker" "inspect" "4da77d2ddc2925672fb163e7c6bdfb0b71bb43b7c343d8a4d771c6e038cd165f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da77d2ddc2925672fb163e7c6bdfb0b71bb43b7c343d8a4d771c6e038cd165f", kill_on_drop: false }`
[INFO] [stdout] 4da77d2ddc2925672fb163e7c6bdfb0b71bb43b7c343d8a4d771c6e038cd165f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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] b5398d03c95587412cd5a13c18cc01d75a819a0f04522be6ed3d1b8df4a6ef5d
[INFO] running `Command { std: "docker" "start" "-a" "b5398d03c95587412cd5a13c18cc01d75a819a0f04522be6ed3d1b8df4a6ef5d", 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 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-4e19d9c09d58ee63)
[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-0d62ce3d1cf695de)
[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" "b5398d03c95587412cd5a13c18cc01d75a819a0f04522be6ed3d1b8df4a6ef5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5398d03c95587412cd5a13c18cc01d75a819a0f04522be6ed3d1b8df4a6ef5d", kill_on_drop: false }`
[INFO] [stdout] b5398d03c95587412cd5a13c18cc01d75a819a0f04522be6ed3d1b8df4a6ef5d