[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 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuanitoddd%2FRust-Learning" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/juanitoddd/Rust-Learning on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-11/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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 09f7294597540e4571a3a803d661f0b746e268557b772eca53cbf048a5bc5654
[INFO] running `Command { std: "docker" "start" "-a" "09f7294597540e4571a3a803d661f0b746e268557b772eca53cbf048a5bc5654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09f7294597540e4571a3a803d661f0b746e268557b772eca53cbf048a5bc5654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f7294597540e4571a3a803d661f0b746e268557b772eca53cbf048a5bc5654", kill_on_drop: false }`
[INFO] [stdout] 09f7294597540e4571a3a803d661f0b746e268557b772eca53cbf048a5bc5654
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 862c6fabb224aece944db9eebb1a36d98ebac246c7bb7aa77ffa4a556d624868
[INFO] running `Command { std: "docker" "start" "-a" "862c6fabb224aece944db9eebb1a36d98ebac246c7bb7aa77ffa4a556d624868", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.104
[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 9.30s
[INFO] running `Command { std: "docker" "inspect" "862c6fabb224aece944db9eebb1a36d98ebac246c7bb7aa77ffa4a556d624868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "862c6fabb224aece944db9eebb1a36d98ebac246c7bb7aa77ffa4a556d624868", kill_on_drop: false }`
[INFO] [stdout] 862c6fabb224aece944db9eebb1a36d98ebac246c7bb7aa77ffa4a556d624868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7a2bff2ec84a6b6b5b3e1263cc01dbb6e4c51f1b77a0aef08d2bea09057fa40a
[INFO] running `Command { std: "docker" "start" "-a" "7a2bff2ec84a6b6b5b3e1263cc01dbb6e4c51f1b77a0aef08d2bea09057fa40a", 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 2.23s
[INFO] running `Command { std: "docker" "inspect" "7a2bff2ec84a6b6b5b3e1263cc01dbb6e4c51f1b77a0aef08d2bea09057fa40a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a2bff2ec84a6b6b5b3e1263cc01dbb6e4c51f1b77a0aef08d2bea09057fa40a", kill_on_drop: false }`
[INFO] [stdout] 7a2bff2ec84a6b6b5b3e1263cc01dbb6e4c51f1b77a0aef08d2bea09057fa40a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 115f87d6c6f3b48438fd1ffa714287e781be3297e311241049e5fd8190731545
[INFO] running `Command { std: "docker" "start" "-a" "115f87d6c6f3b48438fd1ffa714287e781be3297e311241049e5fd8190731545", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.32s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-377019f841e82bc2)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-acd59e3f5f8ed40b)
[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] [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" "115f87d6c6f3b48438fd1ffa714287e781be3297e311241049e5fd8190731545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115f87d6c6f3b48438fd1ffa714287e781be3297e311241049e5fd8190731545", kill_on_drop: false }`
[INFO] [stdout] 115f87d6c6f3b48438fd1ffa714287e781be3297e311241049e5fd8190731545