[INFO] cloning repository https://github.com/wbigger/RustIntro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wbigger/RustIntro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbigger%2FRustIntro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbigger%2FRustIntro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e1c039a0b5396dc86b1435860f521e4065dea32
[INFO] testing wbigger/RustIntro against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwbigger%2FRustIntro" "/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/wbigger/RustIntro on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wbigger/RustIntro
[INFO] finished tweaking git repo https://github.com/wbigger/RustIntro
[INFO] tweaked toml for git repo https://github.com/wbigger/RustIntro written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/wbigger/RustIntro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c213655d004c81f46fe91a42db1b8900d2fcaa8286e1fd0e82d16e151c74f684
[INFO] running `Command { std: "docker" "start" "-a" "c213655d004c81f46fe91a42db1b8900d2fcaa8286e1fd0e82d16e151c74f684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c213655d004c81f46fe91a42db1b8900d2fcaa8286e1fd0e82d16e151c74f684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c213655d004c81f46fe91a42db1b8900d2fcaa8286e1fd0e82d16e151c74f684", kill_on_drop: false }`
[INFO] [stdout] c213655d004c81f46fe91a42db1b8900d2fcaa8286e1fd0e82d16e151c74f684
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96ae5ad07002d493eca10a59ecbe85f54c457d18c5134d1e8b3492fa48b275e9
[INFO] running `Command { std: "docker" "start" "-a" "96ae5ad07002d493eca10a59ecbe85f54c457d18c5134d1e8b3492fa48b275e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling RustIntro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]  --> src/lifetime.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (s1,s2) = line.split_at(prefix.len());
[INFO] [stdout]   |          ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]  --> src/borrowing.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn user(vec: &Vec<i32>) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]  --> src/ownership.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn take(vec: Vec<i32>) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "96ae5ad07002d493eca10a59ecbe85f54c457d18c5134d1e8b3492fa48b275e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96ae5ad07002d493eca10a59ecbe85f54c457d18c5134d1e8b3492fa48b275e9", kill_on_drop: false }`
[INFO] [stdout] 96ae5ad07002d493eca10a59ecbe85f54c457d18c5134d1e8b3492fa48b275e9
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64c287791981d0fc76617ebe6d005cfa95662e3f8d53f6c58be05069d764e646
[INFO] running `Command { std: "docker" "start" "-a" "64c287791981d0fc76617ebe6d005cfa95662e3f8d53f6c58be05069d764e646", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustIntro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]  --> src/ownership.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn take(vec: Vec<i32>) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]  --> src/lifetime.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (s1,s2) = line.split_at(prefix.len());
[INFO] [stdout]   |          ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]  --> src/borrowing.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn user(vec: &Vec<i32>) {
[INFO] [stdout]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]   Executable unittests src/borrowing.rs (/opt/rustwide/target/debug/deps/borrowing-9090b26cd587d6f3)
[INFO] [stderr]   Executable unittests src/lifetime.rs (/opt/rustwide/target/debug/deps/lifetime-8ea2e013fe94c07f)
[INFO] [stderr]   Executable unittests src/ownership.rs (/opt/rustwide/target/debug/deps/ownership-0574e5403f04ad2e)
[INFO] running `Command { std: "docker" "inspect" "64c287791981d0fc76617ebe6d005cfa95662e3f8d53f6c58be05069d764e646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64c287791981d0fc76617ebe6d005cfa95662e3f8d53f6c58be05069d764e646", kill_on_drop: false }`
[INFO] [stdout] 64c287791981d0fc76617ebe6d005cfa95662e3f8d53f6c58be05069d764e646
[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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0930ae14e79a5bd2c8335ad60b3740fec7379ea62c66c28e3034b0252f2fcb71
[INFO] running `Command { std: "docker" "start" "-a" "0930ae14e79a5bd2c8335ad60b3740fec7379ea62c66c28e3034b0252f2fcb71", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]  --> src/lifetime.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let (s1,s2) = line.split_at(prefix.len());
[INFO] [stderr]   |          ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `RustIntro` (bin "lifetime" test) generated 1 warning
[INFO] [stderr] warning: unused variable: `vec`
[INFO] [stderr]  --> src/borrowing.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn user(vec: &Vec<i32>) {
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vec`
[INFO] [stderr]  --> src/ownership.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn take(vec: Vec<i32>) {
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `RustIntro` (bin "borrowing" test) generated 1 warning
[INFO] [stderr] warning: `RustIntro` (bin "ownership" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/borrowing.rs (/opt/rustwide/target/debug/deps/borrowing-9090b26cd587d6f3)
[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] [stdout] 
[INFO] [stderr]      Running unittests src/lifetime.rs (/opt/rustwide/target/debug/deps/lifetime-8ea2e013fe94c07f)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/ownership.rs (/opt/rustwide/target/debug/deps/ownership-0574e5403f04ad2e)
[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] running `Command { std: "docker" "inspect" "0930ae14e79a5bd2c8335ad60b3740fec7379ea62c66c28e3034b0252f2fcb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0930ae14e79a5bd2c8335ad60b3740fec7379ea62c66c28e3034b0252f2fcb71", kill_on_drop: false }`
[INFO] [stdout] 0930ae14e79a5bd2c8335ad60b3740fec7379ea62c66c28e3034b0252f2fcb71