[INFO] fetching crate flips 0.2.1...
[INFO] checking flips-0.2.1 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate flips 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate flips 0.2.1 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flips 0.2.1
[INFO] finished tweaking crates.io crate flips 0.2.1
[INFO] tweaked toml for crates.io crate flips 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" "+5518eaa946291f00471af8b254b2a1715f234882" "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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flips-sys v0.2.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2478d80052e481ecf3632bc4c5508c2e70b1cbd9bccd620d142e2882bb321eee
[INFO] running `Command { std: "docker" "start" "-a" "2478d80052e481ecf3632bc4c5508c2e70b1cbd9bccd620d142e2882bb321eee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2478d80052e481ecf3632bc4c5508c2e70b1cbd9bccd620d142e2882bb321eee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2478d80052e481ecf3632bc4c5508c2e70b1cbd9bccd620d142e2882bb321eee", kill_on_drop: false }`
[INFO] [stdout] 2478d80052e481ecf3632bc4c5508c2e70b1cbd9bccd620d142e2882bb321eee
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c02f1c3db729cda401f114fc042b6d2aa2594b59dab89e0d2e000d09907644dc
[INFO] running `Command { std: "docker" "start" "-a" "c02f1c3db729cda401f114fc042b6d2aa2594b59dab89e0d2e000d09907644dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling flips-sys v0.2.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking flips v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `metadata` is never read
[INFO] [stdout]   --> src/bps.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct BpsOutput {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 57 |     mem: FlipsMemory,
[INFO] [stdout] 58 |     metadata: Option<FlipsMemory>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BpsOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `metadata` is never read
[INFO] [stdout]   --> src/bps.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct BpsOutput {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 57 |     mem: FlipsMemory,
[INFO] [stdout] 58 |     metadata: Option<FlipsMemory>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BpsOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "c02f1c3db729cda401f114fc042b6d2aa2594b59dab89e0d2e000d09907644dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02f1c3db729cda401f114fc042b6d2aa2594b59dab89e0d2e000d09907644dc", kill_on_drop: false }`
[INFO] [stdout] c02f1c3db729cda401f114fc042b6d2aa2594b59dab89e0d2e000d09907644dc
