[INFO] fetching crate pop-trait 0.2.1...
[INFO] testing pop-trait-0.2.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate pop-trait 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pop-trait 0.2.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compare v0.0.6
[INFO] [stderr]   Downloaded linear-map v0.0.4
[INFO] [stderr]   Downloaded enum-set v0.0.8
[INFO] [stderr]   Downloaded interval-heap v0.0.5
[INFO] [stderr]   Downloaded blist v0.0.4
[INFO] [stderr]   Downloaded len-trait v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aedeed954a26060f0ccd2203b6f3ecfcc994b2a18e7f70313e22d238cb674ecf
[INFO] running `Command { std: "docker" "start" "-a" "aedeed954a26060f0ccd2203b6f3ecfcc994b2a18e7f70313e22d238cb674ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aedeed954a26060f0ccd2203b6f3ecfcc994b2a18e7f70313e22d238cb674ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aedeed954a26060f0ccd2203b6f3ecfcc994b2a18e7f70313e22d238cb674ecf", kill_on_drop: false }`
[INFO] [stdout] aedeed954a26060f0ccd2203b6f3ecfcc994b2a18e7f70313e22d238cb674ecf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f9e01ac8203f898cab1eed4ab49f6144017cdebb7e87dce2e2a0e52ec69efdf
[INFO] running `Command { std: "docker" "start" "-a" "7f9e01ac8203f898cab1eed4ab49f6144017cdebb7e87dce2e2a0e52ec69efdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling linked-list v0.0.3
[INFO] [stderr]    Compiling compare v0.0.6
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling linear-map v0.0.4
[INFO] [stderr]    Compiling enum-set v0.0.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling interval-heap v0.0.5
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling traverse v0.0.12
[INFO] [stderr]    Compiling blist v0.0.4
[INFO] [stderr]    Compiling len-trait v0.2.6
[INFO] [stderr]    Compiling pop-trait v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "7f9e01ac8203f898cab1eed4ab49f6144017cdebb7e87dce2e2a0e52ec69efdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f9e01ac8203f898cab1eed4ab49f6144017cdebb7e87dce2e2a0e52ec69efdf", kill_on_drop: false }`
[INFO] [stdout] 7f9e01ac8203f898cab1eed4ab49f6144017cdebb7e87dce2e2a0e52ec69efdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca770b36ee9c1ccca8b58d5049dc844f7642bb527b7cacd2eaaa80b9f4d9449b
[INFO] running `Command { std: "docker" "start" "-a" "ca770b36ee9c1ccca8b58d5049dc844f7642bb527b7cacd2eaaa80b9f4d9449b", 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]    Compiling pop-trait v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(plugin))]
[INFO] [stdout]   |                           ^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: plugins are no longer supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `plugin` in this scope
[INFO] [stdout]  --> src/lib.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(test, plugin(clippy))]
[INFO] [stdout]   |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pop-trait` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ca770b36ee9c1ccca8b58d5049dc844f7642bb527b7cacd2eaaa80b9f4d9449b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca770b36ee9c1ccca8b58d5049dc844f7642bb527b7cacd2eaaa80b9f4d9449b", kill_on_drop: false }`
[INFO] [stdout] ca770b36ee9c1ccca8b58d5049dc844f7642bb527b7cacd2eaaa80b9f4d9449b
