[INFO] fetching crate potk 0.1.0...
[INFO] building potk-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate potk 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate potk 0.1.0
[INFO] finished tweaking crates.io crate potk 0.1.0
[INFO] tweaked toml for crates.io crate potk 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate potk 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate potk 0.1.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f067e6dba1641bbab7453f9117841c551b61ddb6ac85bffbc48f51a5e1c02907
[INFO] running `Command { std: "docker" "start" "-a" "f067e6dba1641bbab7453f9117841c551b61ddb6ac85bffbc48f51a5e1c02907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f067e6dba1641bbab7453f9117841c551b61ddb6ac85bffbc48f51a5e1c02907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f067e6dba1641bbab7453f9117841c551b61ddb6ac85bffbc48f51a5e1c02907", kill_on_drop: false }`
[INFO] [stdout] f067e6dba1641bbab7453f9117841c551b61ddb6ac85bffbc48f51a5e1c02907
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a38fbeee46a17cec590e0807e2837217c0d0b38901b6011cd2a9ca90cbc0c243
[INFO] running `Command { std: "docker" "start" "-a" "a38fbeee46a17cec590e0807e2837217c0d0b38901b6011cd2a9ca90cbc0c243", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote_into_macro v0.2.0
[INFO] [stderr]    Compiling quote_into v0.2.0
[INFO] [stderr]    Compiling potk-macros v0.1.0
[INFO] [stderr]    Compiling potk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.48s
[INFO] running `Command { std: "docker" "inspect" "a38fbeee46a17cec590e0807e2837217c0d0b38901b6011cd2a9ca90cbc0c243", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38fbeee46a17cec590e0807e2837217c0d0b38901b6011cd2a9ca90cbc0c243", kill_on_drop: false }`
[INFO] [stdout] a38fbeee46a17cec590e0807e2837217c0d0b38901b6011cd2a9ca90cbc0c243
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4569c3b19328c4a51f915ad9bdc7686d3098fd4956c31ba75e98bff418490425
[INFO] running `Command { std: "docker" "start" "-a" "4569c3b19328c4a51f915ad9bdc7686d3098fd4956c31ba75e98bff418490425", kill_on_drop: false }`
[INFO] [stderr]    Compiling potk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "4569c3b19328c4a51f915ad9bdc7686d3098fd4956c31ba75e98bff418490425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4569c3b19328c4a51f915ad9bdc7686d3098fd4956c31ba75e98bff418490425", kill_on_drop: false }`
[INFO] [stdout] 4569c3b19328c4a51f915ad9bdc7686d3098fd4956c31ba75e98bff418490425