[INFO] fetching crate ref_arena 0.1.1...
[INFO] checking ref_arena-0.1.1 against try#7b3da9103634dffd4f4365cfd8642427c781d99f+rustflags=-Dinherent-method-on-receiver for 152214-denied
[INFO] extracting crate ref_arena 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate ref_arena 0.1.1
[INFO] finished tweaking crates.io crate ref_arena 0.1.1
[INFO] tweaked toml for crates.io crate ref_arena 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ref_arena 0.1.1 on toolchain 7b3da9103634dffd4f4365cfd8642427c781d99f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] [stderr]       Adding brunch v0.5.3 (available: v0.11.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 938f55cb1d32450aeb7726c8c031b737b2ff82b7a0bbad98b0b9b628787b9d67
[INFO] running `Command { std: "docker" "start" "-a" "938f55cb1d32450aeb7726c8c031b737b2ff82b7a0bbad98b0b9b628787b9d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938f55cb1d32450aeb7726c8c031b737b2ff82b7a0bbad98b0b9b628787b9d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938f55cb1d32450aeb7726c8c031b737b2ff82b7a0bbad98b0b9b628787b9d67", kill_on_drop: false }`
[INFO] [stdout] 938f55cb1d32450aeb7726c8c031b737b2ff82b7a0bbad98b0b9b628787b9d67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dinherent-method-on-receiver" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87346efc630761841ea3f0e71d4066968f68fbb62c306d22727fd364d416773e
[INFO] running `Command { std: "docker" "start" "-a" "87346efc630761841ea3f0e71d4066968f68fbb62c306d22727fd364d416773e", kill_on_drop: false }`
[INFO] [stderr]    Compiling dactyl v0.7.4
[INFO] [stderr]     Checking ref_arena v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: inherent methods on types that implement `Deref` or `Receiver` shadow methods of their target
[INFO] [stdout]    --> src/lib.rs:344:22
[INFO] [stdout]     |
[INFO] [stdout] 344 |     pub fn ref_count(&self) -> usize {
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 402 | impl<T> ops::Deref for RcRef<T> {
[INFO] [stdout]     | ------------------------------- trait implemented here
[INFO] [stdout] 403 |     type Target = T;
[INFO] [stdout]     |     ----------- with `Target` set here
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D inherent-method-on-receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ref_arena` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "87346efc630761841ea3f0e71d4066968f68fbb62c306d22727fd364d416773e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87346efc630761841ea3f0e71d4066968f68fbb62c306d22727fd364d416773e", kill_on_drop: false }`
[INFO] [stdout] 87346efc630761841ea3f0e71d4066968f68fbb62c306d22727fd364d416773e