[INFO] fetching crate rl-core 1.17.0...
[INFO] building rl-core-1.17.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate rl-core 1.17.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rl-core 1.17.0
[INFO] finished tweaking crates.io crate rl-core 1.17.0
[INFO] tweaked toml for crates.io crate rl-core 1.17.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rl-core 1.17.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rl-core 1.17.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10387abc743b1de940f275e213139ffd7007b3d33c59846c2fa07faac8cdba8d
[INFO] running `Command { std: "docker" "start" "-a" "10387abc743b1de940f275e213139ffd7007b3d33c59846c2fa07faac8cdba8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10387abc743b1de940f275e213139ffd7007b3d33c59846c2fa07faac8cdba8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10387abc743b1de940f275e213139ffd7007b3d33c59846c2fa07faac8cdba8d", kill_on_drop: false }`
[INFO] [stdout] 10387abc743b1de940f275e213139ffd7007b3d33c59846c2fa07faac8cdba8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06742a61123e2342783ff0e7a2bcb0cb976228b8434851dcfbaf25dc278245b8
[INFO] running `Command { std: "docker" "start" "-a" "06742a61123e2342783ff0e7a2bcb0cb976228b8434851dcfbaf25dc278245b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rl-core v1.17.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "06742a61123e2342783ff0e7a2bcb0cb976228b8434851dcfbaf25dc278245b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06742a61123e2342783ff0e7a2bcb0cb976228b8434851dcfbaf25dc278245b8", kill_on_drop: false }`
[INFO] [stdout] 06742a61123e2342783ff0e7a2bcb0cb976228b8434851dcfbaf25dc278245b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b3955c34734cb0eda87520f794c9647582e5320c681210c8f7cc2eb11bbc505
[INFO] running `Command { std: "docker" "start" "-a" "5b3955c34734cb0eda87520f794c9647582e5320c681210c8f7cc2eb11bbc505", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling rl-core v1.17.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: extern crate `serde_json` is unused in crate `rl_core`
[INFO] [stdout]    |
[INFO] [stdout]    = help: remove the dependency or add `use serde_json as _;` to the crate root
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 26 |     unused_crate_dependencies,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "5b3955c34734cb0eda87520f794c9647582e5320c681210c8f7cc2eb11bbc505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b3955c34734cb0eda87520f794c9647582e5320c681210c8f7cc2eb11bbc505", kill_on_drop: false }`
[INFO] [stdout] 5b3955c34734cb0eda87520f794c9647582e5320c681210c8f7cc2eb11bbc505