[INFO] fetching crate rust_tcp_ipc 0.3.1...
[INFO] checking rust_tcp_ipc-0.3.1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate rust_tcp_ipc 0.3.1 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate rust_tcp_ipc 0.3.1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] finished tweaking crates.io crate rust_tcp_ipc 0.3.1
[INFO] tweaked toml for crates.io crate rust_tcp_ipc 0.3.1 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs v1.0.5
[INFO] [stderr]   Downloaded simplelog v0.5.3
[INFO] [stderr]   Downloaded redox_users v0.3.5
[INFO] [stderr]   Downloaded constant_time_eq v0.1.5
[INFO] [stderr]   Downloaded rust-argon2 v0.8.3
[INFO] [stderr]   Downloaded blake2b_simd v0.5.11
[INFO] [stderr]   Downloaded arrayref v0.3.6
[INFO] [stderr]   Downloaded chrono v0.4.19
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded arrayvec v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a38edf13a5dfc6ce1572a759b126e2d26cb5da59ad9548844f206a77ef1477dc
[INFO] running `Command { std: "docker" "start" "-a" "a38edf13a5dfc6ce1572a759b126e2d26cb5da59ad9548844f206a77ef1477dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a38edf13a5dfc6ce1572a759b126e2d26cb5da59ad9548844f206a77ef1477dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38edf13a5dfc6ce1572a759b126e2d26cb5da59ad9548844f206a77ef1477dc", kill_on_drop: false }`
[INFO] [stdout] a38edf13a5dfc6ce1572a759b126e2d26cb5da59ad9548844f206a77ef1477dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ecba439a3db419d66525be192493dc4d26e08d40f7b2c2a52421f0379b2c4b1
[INFO] running `Command { std: "docker" "start" "-a" "6ecba439a3db419d66525be192493dc4d26e08d40f7b2c2a52421f0379b2c4b1", 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] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Working`
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `speed_check_tcp_minimal`
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stdout] warning: variant is never constructed: `Working`
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `speed_check_tcp_minimal`
[INFO] [stdout]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn speed_check_tcp_minimal() {
[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 3.69s
[INFO] running `Command { std: "docker" "inspect" "6ecba439a3db419d66525be192493dc4d26e08d40f7b2c2a52421f0379b2c4b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ecba439a3db419d66525be192493dc4d26e08d40f7b2c2a52421f0379b2c4b1", kill_on_drop: false }`
[INFO] [stdout] 6ecba439a3db419d66525be192493dc4d26e08d40f7b2c2a52421f0379b2c4b1