[INFO] fetching crate imgref 1.7.0...
[INFO] checking imgref-1.7.0 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate imgref 1.7.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate imgref 1.7.0 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imgref 1.7.0
[INFO] finished tweaking crates.io crate imgref 1.7.0
[INFO] tweaked toml for crates.io crate imgref 1.7.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7108415b3ab7b7ec1d045eb832d50566ed5711a59eb8cb58d884d1708c2a718
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b7108415b3ab7b7ec1d045eb832d50566ed5711a59eb8cb58d884d1708c2a718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7108415b3ab7b7ec1d045eb832d50566ed5711a59eb8cb58d884d1708c2a718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7108415b3ab7b7ec1d045eb832d50566ed5711a59eb8cb58d884d1708c2a718", kill_on_drop: false }`
[INFO] [stdout] b7108415b3ab7b7ec1d045eb832d50566ed5711a59eb8cb58d884d1708c2a718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bacd52d9f6e6e1d9313893f317ad8e185d8c4a0ead3b166fc26c6c38d8f319d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3bacd52d9f6e6e1d9313893f317ad8e185d8c4a0ead3b166fc26c6c38d8f319d", kill_on_drop: false }`
[INFO] [stderr]     Checking imgref v1.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated field `imgref::Img::buf`: Don't access struct fields directly. Use buf(), buf_mut() or into_buf()
[INFO] [stdout]   --> benches/iterbench.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         img.buf.iter().cloned().map(|p| p as usize).sum::<usize>()
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `imgref::Img::buf`: Don't access struct fields directly. Use buf(), buf_mut() or into_buf()
[INFO] [stdout]   --> benches/iterbench.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         img.buf.chunks(img.stride()).flat_map(|row| row[0..img.width()].iter()).cloned().map(|p| p as usize).sum::<usize>()
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "3bacd52d9f6e6e1d9313893f317ad8e185d8c4a0ead3b166fc26c6c38d8f319d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bacd52d9f6e6e1d9313893f317ad8e185d8c4a0ead3b166fc26c6c38d8f319d", kill_on_drop: false }`
[INFO] [stdout] 3bacd52d9f6e6e1d9313893f317ad8e185d8c4a0ead3b166fc26c6c38d8f319d