[INFO] fetching crate simple-rate-limit 0.2.0...
[INFO] testing simple-rate-limit-0.2.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate simple-rate-limit 0.2.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate simple-rate-limit 0.2.0 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 crates.io crate simple-rate-limit 0.2.0
[INFO] finished tweaking crates.io crate simple-rate-limit 0.2.0
[INFO] tweaked toml for crates.io crate simple-rate-limit 0.2.0 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ring-vec v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6b8a9cf41e1e2bca0efa793fec4929a2d9fb724c05e34d8a1a471a58f184bc8
[INFO] running `Command { std: "docker" "start" "-a" "b6b8a9cf41e1e2bca0efa793fec4929a2d9fb724c05e34d8a1a471a58f184bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6b8a9cf41e1e2bca0efa793fec4929a2d9fb724c05e34d8a1a471a58f184bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6b8a9cf41e1e2bca0efa793fec4929a2d9fb724c05e34d8a1a471a58f184bc8", kill_on_drop: false }`
[INFO] [stdout] b6b8a9cf41e1e2bca0efa793fec4929a2d9fb724c05e34d8a1a471a58f184bc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acef9165b7d6cc0b744b25700624b7a3fb3b0214f58f4308340632af15b146bc
[INFO] running `Command { std: "docker" "start" "-a" "acef9165b7d6cc0b744b25700624b7a3fb3b0214f58f4308340632af15b146bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring-vec v0.1.1
[INFO] [stderr]    Compiling simple-rate-limit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "acef9165b7d6cc0b744b25700624b7a3fb3b0214f58f4308340632af15b146bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acef9165b7d6cc0b744b25700624b7a3fb3b0214f58f4308340632af15b146bc", kill_on_drop: false }`
[INFO] [stdout] acef9165b7d6cc0b744b25700624b7a3fb3b0214f58f4308340632af15b146bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e64add6ed27ff4943689c6a817f673966cc5b728ea0eb828a79e03e39aa7b00e
[INFO] running `Command { std: "docker" "start" "-a" "e64add6ed27ff4943689c6a817f673966cc5b728ea0eb828a79e03e39aa7b00e", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-rate-limit v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/test.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-rate-limit` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e64add6ed27ff4943689c6a817f673966cc5b728ea0eb828a79e03e39aa7b00e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64add6ed27ff4943689c6a817f673966cc5b728ea0eb828a79e03e39aa7b00e", kill_on_drop: false }`
[INFO] [stdout] e64add6ed27ff4943689c6a817f673966cc5b728ea0eb828a79e03e39aa7b00e