[INFO] fetching crate densevec 0.5.1...
[INFO] checking densevec-0.5.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate densevec 0.5.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate densevec 0.5.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate densevec 0.5.1
[INFO] finished tweaking crates.io crate densevec 0.5.1
[INFO] tweaked toml for crates.io crate densevec 0.5.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 915beabbe41d0e97f0afcea5f9da7705e31f05cb77b677f8e102cc00006ae304
[INFO] running `Command { std: "docker" "start" "-a" "915beabbe41d0e97f0afcea5f9da7705e31f05cb77b677f8e102cc00006ae304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "915beabbe41d0e97f0afcea5f9da7705e31f05cb77b677f8e102cc00006ae304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "915beabbe41d0e97f0afcea5f9da7705e31f05cb77b677f8e102cc00006ae304", kill_on_drop: false }`
[INFO] [stdout] 915beabbe41d0e97f0afcea5f9da7705e31f05cb77b677f8e102cc00006ae304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efa534d7f63b6b761f7e3e1d3c24c692ed6eb83022ef070b5787d8a429d7430a
[INFO] running `Command { std: "docker" "start" "-a" "efa534d7f63b6b761f7e3e1d3c24c692ed6eb83022ef070b5787d8a429d7430a", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking densevec v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/lib.rs:1886:36
[INFO] [stdout]      |
[INFO] [stdout] 1886 |         a.insert(key.clone(), value.clone());
[INFO] [stdout]      |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]      = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/lib.rs:1909:31
[INFO] [stdout]      |
[INFO] [stdout] 1909 |                 e.insert(value.clone());
[INFO] [stdout]      |                               ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "efa534d7f63b6b761f7e3e1d3c24c692ed6eb83022ef070b5787d8a429d7430a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efa534d7f63b6b761f7e3e1d3c24c692ed6eb83022ef070b5787d8a429d7430a", kill_on_drop: false }`
[INFO] [stdout] efa534d7f63b6b761f7e3e1d3c24c692ed6eb83022ef070b5787d8a429d7430a