[INFO] fetching crate drive-client 0.1.6...
[INFO] checking drive-client-0.1.6 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate drive-client 0.1.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate drive-client 0.1.6 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drive-client 0.1.6
[INFO] finished tweaking crates.io crate drive-client 0.1.6
[INFO] tweaked toml for crates.io crate drive-client 0.1.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e7d1a6d346e9e5bd797017a7301baf9c5b1129be2b02b2349b721e5cb7fb462
[INFO] running `Command { std: "docker" "start" "-a" "7e7d1a6d346e9e5bd797017a7301baf9c5b1129be2b02b2349b721e5cb7fb462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e7d1a6d346e9e5bd797017a7301baf9c5b1129be2b02b2349b721e5cb7fb462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e7d1a6d346e9e5bd797017a7301baf9c5b1129be2b02b2349b721e5cb7fb462", kill_on_drop: false }`
[INFO] [stdout] 7e7d1a6d346e9e5bd797017a7301baf9c5b1129be2b02b2349b721e5cb7fb462
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8fe329d8719a8f47d092677ae9e768baff5fd9de27b7b067afc7835bd87e231
[INFO] running `Command { std: "docker" "start" "-a" "e8fe329d8719a8f47d092677ae9e768baff5fd9de27b7b067afc7835bd87e231", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking pnet_base v0.27.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling pnet v0.27.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking pnet_sys v0.27.2
[INFO] [stderr]     Checking memchr v2.4.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking pnet_macros_support v0.27.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]     Checking sha-1 v0.9.7
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking dns-message-parser v0.4.6
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.27.2
[INFO] [stderr]     Checking ipnetwork v0.17.0
[INFO] [stderr]     Checking pnet_datalink v0.27.2
[INFO] [stderr]    Compiling pnet_packet v0.27.2
[INFO] [stderr]     Checking pnet_transport v0.27.2
[INFO] [stderr]     Checking drive-client v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde::Deserialize`
[INFO] [stdout]  --> src/drive_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::Deserialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Deserialize`
[INFO] [stdout]  --> src/drive_client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde::Deserialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tcp_client.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         &self.send_files(&requested_files);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let _ = &self.send_files(&requested_files);
[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 46.98s
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tcp_client.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         &self.send_files(&requested_files);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let _ = &self.send_files(&requested_files);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e8fe329d8719a8f47d092677ae9e768baff5fd9de27b7b067afc7835bd87e231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8fe329d8719a8f47d092677ae9e768baff5fd9de27b7b067afc7835bd87e231", kill_on_drop: false }`
[INFO] [stdout] e8fe329d8719a8f47d092677ae9e768baff5fd9de27b7b067afc7835bd87e231