[INFO] fetching crate unsafe_example 0.2.0...
[INFO] testing unsafe_example-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate unsafe_example 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate unsafe_example 0.2.0 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 crates.io crate unsafe_example 0.2.0
[INFO] finished tweaking crates.io crate unsafe_example 0.2.0
[INFO] tweaked toml for crates.io crate unsafe_example 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate unsafe_example 0.2.0 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 28c031aa3e667db8c581936645333d1815e22ab31b274610fb3a0e2c69653386
[INFO] running `Command { std: "docker" "start" "-a" "28c031aa3e667db8c581936645333d1815e22ab31b274610fb3a0e2c69653386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28c031aa3e667db8c581936645333d1815e22ab31b274610fb3a0e2c69653386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c031aa3e667db8c581936645333d1815e22ab31b274610fb3a0e2c69653386", kill_on_drop: false }`
[INFO] [stdout] 28c031aa3e667db8c581936645333d1815e22ab31b274610fb3a0e2c69653386
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 0ab2fab613ed6840f31eba8957e749c01091a69455a3b36c218b9f730d46ec0d
[INFO] running `Command { std: "docker" "start" "-a" "0ab2fab613ed6840f31eba8957e749c01091a69455a3b36c218b9f730d46ec0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unsafe_example v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub unsafe fn index_3(idx: usize, arr: &[u8]) -> Option<u8>
[INFO] [stdout]    | ----------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 27 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]    = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]    = note: `#[allow(unsafe_op_in_unsafe_fn)]` 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 0.85s
[INFO] running `Command { std: "docker" "inspect" "0ab2fab613ed6840f31eba8957e749c01091a69455a3b36c218b9f730d46ec0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ab2fab613ed6840f31eba8957e749c01091a69455a3b36c218b9f730d46ec0d", kill_on_drop: false }`
[INFO] [stdout] 0ab2fab613ed6840f31eba8957e749c01091a69455a3b36c218b9f730d46ec0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 84fd72ab7a579284ded1e49c026998d40d420b7f990c43fa74ee24b453067060
[INFO] running `Command { std: "docker" "start" "-a" "84fd72ab7a579284ded1e49c026998d40d420b7f990c43fa74ee24b453067060", kill_on_drop: false }`
[INFO] [stderr]    Compiling unsafe_example v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub unsafe fn index_3(idx: usize, arr: &[u8]) -> Option<u8>
[INFO] [stdout]    | ----------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 27 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]    = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]    = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub unsafe fn index_3(idx: usize, arr: &[u8]) -> Option<u8>
[INFO] [stdout]    | ----------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 27 |         unsafe {
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout]    = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stdout]    = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/unsafe_example-1e7eab5aa1a69e20)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/unsafe_example-b10d3587dc0fa6d2)
[INFO] running `Command { std: "docker" "inspect" "84fd72ab7a579284ded1e49c026998d40d420b7f990c43fa74ee24b453067060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84fd72ab7a579284ded1e49c026998d40d420b7f990c43fa74ee24b453067060", kill_on_drop: false }`
[INFO] [stdout] 84fd72ab7a579284ded1e49c026998d40d420b7f990c43fa74ee24b453067060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8c03419918422b0dcda238080bd87c46808953f29ecaeb9aef6a0752ab55af86
[INFO] running `Command { std: "docker" "start" "-a" "8c03419918422b0dcda238080bd87c46808953f29ecaeb9aef6a0752ab55af86", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/lib.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub unsafe fn index_3(idx: usize, arr: &[u8]) -> Option<u8>
[INFO] [stderr]    | ----------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 27 |         unsafe {
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr]    = note: this `unsafe` block does contain unsafe operations, but those are already allowed in an `unsafe fn`
[INFO] [stderr]    = note: `#[allow(unsafe_op_in_unsafe_fn)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `unsafe_example` (lib) generated 1 warning
[INFO] [stderr] warning: `unsafe_example` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unsafe_example-1e7eab5aa1a69e20)
[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 src/main.rs (/opt/rustwide/target/debug/deps/unsafe_example-b10d3587dc0fa6d2)
[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 unsafe_example
[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" "8c03419918422b0dcda238080bd87c46808953f29ecaeb9aef6a0752ab55af86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c03419918422b0dcda238080bd87c46808953f29ecaeb9aef6a0752ab55af86", kill_on_drop: false }`
[INFO] [stdout] 8c03419918422b0dcda238080bd87c46808953f29ecaeb9aef6a0752ab55af86