[INFO] fetching crate platter-walk 0.1.3...
[INFO] checking platter-walk-0.1.3 against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] extracting crate platter-walk 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate platter-walk 0.1.3 on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate platter-walk 0.1.3
[INFO] finished tweaking crates.io crate platter-walk 0.1.3
[INFO] tweaked toml for crates.io crate platter-walk 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1be45852f206b78ccc8f8204ba2d86b2ed54470f35184d818e1460e200e765e
[INFO] running `Command { std: "docker" "start" "-a" "a1be45852f206b78ccc8f8204ba2d86b2ed54470f35184d818e1460e200e765e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1be45852f206b78ccc8f8204ba2d86b2ed54470f35184d818e1460e200e765e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1be45852f206b78ccc8f8204ba2d86b2ed54470f35184d818e1460e200e765e", kill_on_drop: false }`
[INFO] [stdout] a1be45852f206b78ccc8f8204ba2d86b2ed54470f35184d818e1460e200e765e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c91a5ce1a45ec8611d9c67c1bc6c1d218f8a0ac00e6e2e733351d54b066068b3
[INFO] running `Command { std: "docker" "start" "-a" "c91a5ce1a45ec8611d9c67c1bc6c1d218f8a0ac00e6e2e733351d54b066068b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking minilzo-sys v0.1.0
[INFO] [stderr]     Checking mnt v0.3.1
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking minilzo v0.1.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking btrfs2 v1.2.2
[INFO] [stderr]     Checking platter-walk v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prev_fetched`
[INFO] [stdout]    --> src/lib.rs:207:13
[INFO] [stdout]     |
[INFO] [stdout] 207 |         let prev_fetched = self.prefetched.len();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_fetched`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev_fetched`
[INFO] [stdout]    --> src/lib.rs:207:13
[INFO] [stdout]     |
[INFO] [stdout] 207 |         let prev_fetched = self.prefetched.len();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_fetched`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` 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 4.99s
[INFO] running `Command { std: "docker" "inspect" "c91a5ce1a45ec8611d9c67c1bc6c1d218f8a0ac00e6e2e733351d54b066068b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c91a5ce1a45ec8611d9c67c1bc6c1d218f8a0ac00e6e2e733351d54b066068b3", kill_on_drop: false }`
[INFO] [stdout] c91a5ce1a45ec8611d9c67c1bc6c1d218f8a0ac00e6e2e733351d54b066068b3