[INFO] fetching crate pop-trait 0.2.1...
[INFO] checking pop-trait-0.2.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate pop-trait 0.2.1 into /workspace/builds/worker-72/source
[INFO] validating manifest of crates.io crate pop-trait 0.2.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pop-trait 0.2.1
[INFO] finished tweaking crates.io crate pop-trait 0.2.1
[INFO] tweaked toml for crates.io crate pop-trait 0.2.1 written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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 linked-list v0.0.3
[INFO] [stderr]   Downloaded enum-set v0.0.8
[INFO] [stderr]   Downloaded linear-map v0.0.4
[INFO] [stderr]   Downloaded compare v0.0.6
[INFO] [stderr]   Downloaded interval-heap v0.0.5
[INFO] [stderr]   Downloaded blist v0.0.4
[INFO] [stderr]   Downloaded len-trait v0.2.6
[INFO] [stderr]   Downloaded traverse v0.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a84a9dbd308458303064f8e85d32fa608cd41a7c394f63228adddb78dd9ada57
[INFO] running `Command { std: "docker" "start" "-a" "a84a9dbd308458303064f8e85d32fa608cd41a7c394f63228adddb78dd9ada57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a84a9dbd308458303064f8e85d32fa608cd41a7c394f63228adddb78dd9ada57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a84a9dbd308458303064f8e85d32fa608cd41a7c394f63228adddb78dd9ada57", kill_on_drop: false }`
[INFO] [stdout] a84a9dbd308458303064f8e85d32fa608cd41a7c394f63228adddb78dd9ada57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4ebbe10c119aa6f2cb3bec7fb673c86da4153e4c49c2a14849dcb37a3eaacbc
[INFO] running `Command { std: "docker" "start" "-a" "d4ebbe10c119aa6f2cb3bec7fb673c86da4153e4c49c2a14849dcb37a3eaacbc", kill_on_drop: false }`
[INFO] [stderr] warning: pop-trait v0.2.1 (/opt/rustwide/workdir) ignoring invalid dependency `clippy` which is missing a lib target
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking linked-list v0.0.3
[INFO] [stderr]     Checking compare v0.0.6
[INFO] [stderr]     Checking linear-map v0.0.4
[INFO] [stderr]     Checking enum-set v0.0.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking interval-heap v0.0.5
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking traverse v0.0.12
[INFO] [stderr]     Checking blist v0.0.4
[INFO] [stderr]     Checking len-trait v0.2.6
[INFO] [stderr]     Checking pop-trait v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `clippy`
[INFO] [stdout]  --> src/lib.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(test, plugin(clippy))]
[INFO] [stdout]   |                          ^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pop-trait` 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" "d4ebbe10c119aa6f2cb3bec7fb673c86da4153e4c49c2a14849dcb37a3eaacbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ebbe10c119aa6f2cb3bec7fb673c86da4153e4c49c2a14849dcb37a3eaacbc", kill_on_drop: false }`
[INFO] [stdout] d4ebbe10c119aa6f2cb3bec7fb673c86da4153e4c49c2a14849dcb37a3eaacbc