[INFO] cloning repository https://github.com/lemontree1729/learning_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lemontree1729/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemontree1729%2Flearning_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flemontree1729%2Flearning_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2b9cf44680fe3ba343477291a60bb44f83c0a111 [INFO] testing lemontree1729/learning_rust 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%2Flemontree1729%2Flearning_rust" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/lemontree1729/learning_rust 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/lemontree1729/learning_rust [INFO] finished tweaking git repo https://github.com/lemontree1729/learning_rust [INFO] tweaked toml for git repo https://github.com/lemontree1729/learning_rust written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/lemontree1729/learning_rust 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2022-04-10" "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] 716d6f824c41f36111c60691181a28cd9dcb985836a0650012102437e3bf2e89 [INFO] running `Command { std: "docker" "start" "-a" "716d6f824c41f36111c60691181a28cd9dcb985836a0650012102437e3bf2e89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "716d6f824c41f36111c60691181a28cd9dcb985836a0650012102437e3bf2e89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "716d6f824c41f36111c60691181a28cd9dcb985836a0650012102437e3bf2e89", kill_on_drop: false }` [INFO] [stdout] 716d6f824c41f36111c60691181a28cd9dcb985836a0650012102437e3bf2e89 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ffbf5147abbc121381315cb37badc0ef88c2de853338bad9d5bb0986dbd59e9f [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "ffbf5147abbc121381315cb37badc0ef88c2de853338bad9d5bb0986dbd59e9f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.112 [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 learning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `s` is never read [INFO] [stdout] --> src/bin/etc.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | s = String::from(""); // error! [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/borrow_and_slice.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let a = String::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 12.41s [INFO] running `Command { std: "docker" "inspect" "ffbf5147abbc121381315cb37badc0ef88c2de853338bad9d5bb0986dbd59e9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ffbf5147abbc121381315cb37badc0ef88c2de853338bad9d5bb0986dbd59e9f", kill_on_drop: false }` [INFO] [stdout] ffbf5147abbc121381315cb37badc0ef88c2de853338bad9d5bb0986dbd59e9f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2022-04-10" "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] fe11c805af11ffc43a4ec062e5bf286db102fa48020ee64e9963daec68880276 [INFO] running `Command { std: "docker" "start" "-a" "fe11c805af11ffc43a4ec062e5bf286db102fa48020ee64e9963daec68880276", kill_on_drop: false }` [INFO] [stderr] Compiling learning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `s` is never read [INFO] [stdout] --> src/bin/etc.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | s = String::from(""); // error! [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/borrow_and_slice.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let a = String::new(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [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] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.36s [INFO] [stderr] Executable unittests src/bin/borrow_and_slice.rs (/opt/rustwide/target/debug/deps/borrow_and_slice-1b6938d817e6d806) [INFO] [stderr] Executable unittests src/bin/branches.rs (/opt/rustwide/target/debug/deps/branches-3bedc8b0b1895239) [INFO] [stderr] Executable unittests src/bin/data_types.rs (/opt/rustwide/target/debug/deps/data_types-de6b561add90d6a4) [INFO] [stderr] Executable unittests src/bin/etc.rs (/opt/rustwide/target/debug/deps/etc-83723ac52febc26f) [INFO] [stderr] Executable unittests src/bin/functions.rs (/opt/rustwide/target/debug/deps/functions-8a093b5089621382) [INFO] [stderr] Executable unittests src/bin/guessing_game.rs (/opt/rustwide/target/debug/deps/guessing_game-b557e4439277e11a) [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/learning_rust-48dd80b1c176b2d1) [INFO] [stderr] Executable unittests src/bin/ownership.rs (/opt/rustwide/target/debug/deps/ownership-bb4137a16b7013b5) [INFO] [stderr] Executable unittests src/bin/test.rs (/opt/rustwide/target/debug/deps/test-46a315a1951bed52) [INFO] [stderr] Executable unittests src/bin/variables.rs (/opt/rustwide/target/debug/deps/variables-78f68be681671701) [INFO] running `Command { std: "docker" "inspect" "fe11c805af11ffc43a4ec062e5bf286db102fa48020ee64e9963daec68880276", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe11c805af11ffc43a4ec062e5bf286db102fa48020ee64e9963daec68880276", kill_on_drop: false }` [INFO] [stdout] fe11c805af11ffc43a4ec062e5bf286db102fa48020ee64e9963daec68880276 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2022-04-10" "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] 4f9464f270005be0c09e583ef3187dde6d1815c2bbbd3f268e331e44e6fdc540 [INFO] running `Command { std: "docker" "start" "-a" "4f9464f270005be0c09e583ef3187dde6d1815c2bbbd3f268e331e44e6fdc540", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `a` [INFO] [stdout] [INFO] [stderr] --> src/bin/borrow_and_slice.rs:8:9 [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 8 | let a = String::new(); [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] running 0 tests [INFO] [stderr] [INFO] [stdout] [INFO] [stderr] warning: `learning_rust` (bin "borrow_and_slice" test) generated 1 warning [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] warning: value assigned to `s` is never read [INFO] [stdout] [INFO] [stderr] --> src/bin/etc.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | s = String::from(""); // error! [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: `learning_rust` (bin "etc" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/bin/borrow_and_slice.rs (/opt/rustwide/target/debug/deps/borrow_and_slice-1b6938d817e6d806) [INFO] [stderr] Running unittests src/bin/branches.rs (/opt/rustwide/target/debug/deps/branches-3bedc8b0b1895239) [INFO] [stderr] Running unittests src/bin/data_types.rs (/opt/rustwide/target/debug/deps/data_types-de6b561add90d6a4) [INFO] [stderr] Running unittests src/bin/etc.rs (/opt/rustwide/target/debug/deps/etc-83723ac52febc26f) [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/bin/functions.rs (/opt/rustwide/target/debug/deps/functions-8a093b5089621382) [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] [stdout] [INFO] [stderr] Running unittests src/bin/guessing_game.rs (/opt/rustwide/target/debug/deps/guessing_game-b557e4439277e11a) [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 src/main.rs (/opt/rustwide/target/debug/deps/learning_rust-48dd80b1c176b2d1) [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/bin/ownership.rs (/opt/rustwide/target/debug/deps/ownership-bb4137a16b7013b5) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests src/bin/test.rs (/opt/rustwide/target/debug/deps/test-46a315a1951bed52) [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/bin/variables.rs (/opt/rustwide/target/debug/deps/variables-78f68be681671701) [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] running `Command { std: "docker" "inspect" "4f9464f270005be0c09e583ef3187dde6d1815c2bbbd3f268e331e44e6fdc540", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f9464f270005be0c09e583ef3187dde6d1815c2bbbd3f268e331e44e6fdc540", kill_on_drop: false }` [INFO] [stdout] 4f9464f270005be0c09e583ef3187dde6d1815c2bbbd3f268e331e44e6fdc540