[INFO] fetching crate vcd-ng 0.1.2...
[INFO] checking vcd-ng-0.1.2 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate vcd-ng 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate vcd-ng 0.1.2 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vcd-ng 0.1.2
[INFO] finished tweaking crates.io crate vcd-ng 0.1.2
[INFO] tweaked toml for crates.io crate vcd-ng 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate vcd-ng 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustversion v1.0.11
[INFO] [stderr]   Downloaded linereader v0.4.0
[INFO] [stderr]   Downloaded atoi_radix10 v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15585906e7eb868abc82c3db5132b053ffe4cfe2823a0561ada3ed59d2d69b6f
[INFO] running `Command { std: "docker" "start" "-a" "15585906e7eb868abc82c3db5132b053ffe4cfe2823a0561ada3ed59d2d69b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15585906e7eb868abc82c3db5132b053ffe4cfe2823a0561ada3ed59d2d69b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15585906e7eb868abc82c3db5132b053ffe4cfe2823a0561ada3ed59d2d69b6f", kill_on_drop: false }`
[INFO] [stdout] 15585906e7eb868abc82c3db5132b053ffe4cfe2823a0561ada3ed59d2d69b6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9ea7338914607c1044bb6681e54ce0fe74bfa3d4845fde6737f442ea0268b27
[INFO] running `Command { std: "docker" "start" "-a" "c9ea7338914607c1044bb6681e54ce0fe74bfa3d4845fde6737f442ea0268b27", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking atoi_radix10 v0.0.1
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking linereader v0.4.0
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking castaway v0.2.2
[INFO] [stderr]     Checking compact_str v0.6.1
[INFO] [stderr]     Checking vcd-ng v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/fastflow.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |         Ok(drop(self.next_line()?))
[INFO] [stdout]    |            ^^^^^-----------------^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `Option<&[u8]>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/fastflow.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |         Ok(drop(self.next_line()?))
[INFO] [stdout]    |            ^^^^^-----------------^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 argument has type `Option<&[u8]>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` 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 5.62s
[INFO] running `Command { std: "docker" "inspect" "c9ea7338914607c1044bb6681e54ce0fe74bfa3d4845fde6737f442ea0268b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ea7338914607c1044bb6681e54ce0fe74bfa3d4845fde6737f442ea0268b27", kill_on_drop: false }`
[INFO] [stdout] c9ea7338914607c1044bb6681e54ce0fe74bfa3d4845fde6737f442ea0268b27