[INFO] cloning repository https://github.com/illef/beads_puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illef/beads_puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f43718ba2b0ed8775d3f3f68e75a75fb5908b645
[INFO] checking illef/beads_puzzle against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/illef/beads_puzzle on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/illef/beads_puzzle
[INFO] finished tweaking git repo https://github.com/illef/beads_puzzle
[INFO] tweaked toml for git repo https://github.com/illef/beads_puzzle written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/illef/beads_puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed94655d30c7d90739b7f2714dcab6863ae2b3db9c4ddb4f65f87e15f5c99ca1
[INFO] running `Command { std: "docker" "start" "-a" "ed94655d30c7d90739b7f2714dcab6863ae2b3db9c4ddb4f65f87e15f5c99ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed94655d30c7d90739b7f2714dcab6863ae2b3db9c4ddb4f65f87e15f5c99ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed94655d30c7d90739b7f2714dcab6863ae2b3db9c4ddb4f65f87e15f5c99ca1", kill_on_drop: false }`
[INFO] [stdout] ed94655d30c7d90739b7f2714dcab6863ae2b3db9c4ddb4f65f87e15f5c99ca1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8815c2afd461fb15aaeaaf985ab7c8a69e4e5af96ab8f03e932517d3f295fd9
[INFO] running `Command { std: "docker" "start" "-a" "d8815c2afd461fb15aaeaaf985ab7c8a69e4e5af96ab8f03e932517d3f295fd9", kill_on_drop: false }`
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking beads_puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: custom inner attributes are unstable
[INFO] [stdout]  --> src/block.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![rustfmt::skip]
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[deny(soft_unstable)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: custom inner attributes are unstable
[INFO] [stdout]  --> src/block.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![rustfmt::skip]
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[deny(soft_unstable)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `beads_puzzle` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d8815c2afd461fb15aaeaaf985ab7c8a69e4e5af96ab8f03e932517d3f295fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8815c2afd461fb15aaeaaf985ab7c8a69e4e5af96ab8f03e932517d3f295fd9", kill_on_drop: false }`
[INFO] [stdout] d8815c2afd461fb15aaeaaf985ab7c8a69e4e5af96ab8f03e932517d3f295fd9