[INFO] fetching crate cl-generic-vec 0.4.0...
[INFO] checking cl-generic-vec-0.4.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate cl-generic-vec 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate cl-generic-vec 0.4.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cl-generic-vec 0.4.0
[INFO] finished tweaking crates.io crate cl-generic-vec 0.4.0
[INFO] tweaked toml for crates.io crate cl-generic-vec 0.4.0 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mockalloc v0.1.2
[INFO] [stderr]   Downloaded mockalloc-macros v0.1.0
[INFO] [stderr]   Downloaded static-alloc v0.2.5
[INFO] [stderr]   Downloaded alloc-traits v0.1.1
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e97a51fbb717a65ccdc8f8855b91327c82e86dceebf6c92d9fab04df61b2319
[INFO] running `Command { std: "docker" "start" "-a" "1e97a51fbb717a65ccdc8f8855b91327c82e86dceebf6c92d9fab04df61b2319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e97a51fbb717a65ccdc8f8855b91327c82e86dceebf6c92d9fab04df61b2319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e97a51fbb717a65ccdc8f8855b91327c82e86dceebf6c92d9fab04df61b2319", kill_on_drop: false }`
[INFO] [stdout] 1e97a51fbb717a65ccdc8f8855b91327c82e86dceebf6c92d9fab04df61b2319
[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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19c5489c9010b866ab99092f3cfae3a9f5f5723d74163d8ccee2553dccf9955f
[INFO] running `Command { std: "docker" "start" "-a" "19c5489c9010b866ab99092f3cfae3a9f5f5723d74163d8ccee2553dccf9955f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking alloc-traits v0.1.1
[INFO] [stderr]     Checking cl-generic-vec v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking static-alloc v0.2.5
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/iter.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 |         iter.for_each(|item| drop(self.push(item)));
[INFO] [stdout]    |                              ^^^^^---------------^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   argument has type `&mut <S as Storage>::Item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mockalloc-macros v0.1.0
[INFO] [stderr]     Checking mockalloc v0.1.2
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/iter.rs:41:30
[INFO] [stdout]    |
[INFO] [stdout] 41 |         iter.for_each(|item| drop(self.push(item)));
[INFO] [stdout]    |                              ^^^^^---------------^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   argument has type `&mut <S as Storage>::Item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "19c5489c9010b866ab99092f3cfae3a9f5f5723d74163d8ccee2553dccf9955f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c5489c9010b866ab99092f3cfae3a9f5f5723d74163d8ccee2553dccf9955f", kill_on_drop: false }`
[INFO] [stdout] 19c5489c9010b866ab99092f3cfae3a9f5f5723d74163d8ccee2553dccf9955f