[INFO] fetching crate drive-client 0.1.6...
[INFO] checking drive-client-0.1.6 against master#6d05c430d2f0573bf98320bb1d2457a72ea1e67f for pr-116607
[INFO] extracting crate drive-client 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate drive-client 0.1.6 on toolchain 6d05c430d2f0573bf98320bb1d2457a72ea1e67f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "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" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex_pos v0.42.0
[INFO] [stderr]   Downloaded pnet_packet v0.27.2
[INFO] [stderr]   Downloaded bitflags v0.5.0
[INFO] [stderr]   Downloaded pnet_datalink v0.27.2
[INFO] [stderr]   Downloaded syntex v0.42.2
[INFO] [stderr]   Downloaded syntex_errors v0.42.0
[INFO] [stderr]   Downloaded pnet_macros_support v0.27.2
[INFO] [stderr]   Downloaded pnet_base v0.27.2
[INFO] [stderr]   Downloaded pnet_transport v0.27.2
[INFO] [stderr]   Downloaded pnet_macros v0.27.2
[INFO] [stderr]   Downloaded syntex_syntax v0.42.0
[INFO] [stderr]   Downloaded pnet_sys v0.27.2
[INFO] [stderr]   Downloaded pnet v0.27.2
[INFO] [stderr]   Downloaded dns-message-parser v0.4.6
[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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 394dab4f3f12e2299a03607d6561d43bb2afd0de745429353842959866eb1184
[INFO] running `Command { std: "docker" "start" "-a" "394dab4f3f12e2299a03607d6561d43bb2afd0de745429353842959866eb1184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394dab4f3f12e2299a03607d6561d43bb2afd0de745429353842959866eb1184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394dab4f3f12e2299a03607d6561d43bb2afd0de745429353842959866eb1184", kill_on_drop: false }`
[INFO] [stdout] 394dab4f3f12e2299a03607d6561d43bb2afd0de745429353842959866eb1184
[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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f67846c46539279c7920612dcfe987d562390e5ae929412466004fe7f217da07
[INFO] running `Command { std: "docker" "start" "-a" "f67846c46539279c7920612dcfe987d562390e5ae929412466004fe7f217da07", 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 glob v0.2.11
[INFO] [stderr]     Checking pnet_base v0.27.2
[INFO] [stderr]     Checking pnet_sys v0.27.2
[INFO] [stderr]    Compiling pnet v0.27.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking ipnetwork v0.17.0
[INFO] [stderr]     Checking serde_json v1.0.107
[INFO] [stderr]     Checking pnet_macros_support v0.27.2
[INFO] [stderr]     Checking pnet_datalink v0.27.2
[INFO] [stderr]     Checking dns-message-parser v0.4.6
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros 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: 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] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.64s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "f67846c46539279c7920612dcfe987d562390e5ae929412466004fe7f217da07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f67846c46539279c7920612dcfe987d562390e5ae929412466004fe7f217da07", kill_on_drop: false }`
[INFO] [stdout] f67846c46539279c7920612dcfe987d562390e5ae929412466004fe7f217da07