[INFO] fetching crate rust_tcp_ipc 0.3.1...
[INFO] testing rust_tcp_ipc-0.3.1 against try#a40ec913238f4f188d97c41aa605cb486451acf2+target=i686-unknown-linux-musl for musl_1_2_upgrade_i686_unknown_linux_musl
[INFO] extracting crate rust_tcp_ipc 0.3.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate rust_tcp_ipc 0.3.1 on toolchain a40ec913238f4f188d97c41aa605cb486451acf2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "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-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f5a682e49ff9a11766e3bb34b8e17cd3a89d2b0c10ab6f1f4b156b808bf84b8
[INFO] running `Command { std: "docker" "start" "-a" "0f5a682e49ff9a11766e3bb34b8e17cd3a89d2b0c10ab6f1f4b156b808bf84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f5a682e49ff9a11766e3bb34b8e17cd3a89d2b0c10ab6f1f4b156b808bf84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5a682e49ff9a11766e3bb34b8e17cd3a89d2b0c10ab6f1f4b156b808bf84b8", kill_on_drop: false }`
[INFO] [stdout] 0f5a682e49ff9a11766e3bb34b8e17cd3a89d2b0c10ab6f1f4b156b808bf84b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a8a7a1c42bd3869d3d81b833366c0feedb40056df5061b60f3fe4e27f2dfebcf
[INFO] running `Command { std: "docker" "start" "-a" "a8a7a1c42bd3869d3d81b833366c0feedb40056df5061b60f3fe4e27f2dfebcf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Working` is never constructed
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum BusyStatesExample {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 10 |     Idle,
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[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 0.21s
[INFO] running `Command { std: "docker" "inspect" "a8a7a1c42bd3869d3d81b833366c0feedb40056df5061b60f3fe4e27f2dfebcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8a7a1c42bd3869d3d81b833366c0feedb40056df5061b60f3fe4e27f2dfebcf", kill_on_drop: false }`
[INFO] [stdout] a8a7a1c42bd3869d3d81b833366c0feedb40056df5061b60f3fe4e27f2dfebcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b3828c70bd10b0290d0c482a19a37cd97db846c6a0d31dd28a22ab6715104c43
[INFO] running `Command { std: "docker" "start" "-a" "b3828c70bd10b0290d0c482a19a37cd97db846c6a0d31dd28a22ab6715104c43", kill_on_drop: false }`
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stdout] warning: variant `Working` is never constructed
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum BusyStatesExample {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 10 |     Idle,
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[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]    Compiling term v0.5.2
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Working` is never constructed
[INFO] [stdout]   --> src/tests/example_protocol.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum BusyStatesExample {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 10 |     Idle,
[INFO] [stdout] 11 |     Working,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used
[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 test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "b3828c70bd10b0290d0c482a19a37cd97db846c6a0d31dd28a22ab6715104c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3828c70bd10b0290d0c482a19a37cd97db846c6a0d31dd28a22ab6715104c43", kill_on_drop: false }`
[INFO] [stdout] b3828c70bd10b0290d0c482a19a37cd97db846c6a0d31dd28a22ab6715104c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3d532c2baa59a8a48e45c3be7eb049f77ac5a58a7a6514a58a8e878df1c3d03d" "/opt/rustwide/cargo-home/bin/cargo" "+a40ec913238f4f188d97c41aa605cb486451acf2" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] eb3e98d71f7b3769bf17dfebdd8af81bcb4b22a5ab33477132a627020d70e043
[INFO] running `Command { std: "docker" "start" "-a" "eb3e98d71f7b3769bf17dfebdd8af81bcb4b22a5ab33477132a627020d70e043", kill_on_drop: false }`
[INFO] [stderr] warning: variant `Working` is never constructed
[INFO] [stderr]   --> src/tests/example_protocol.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub enum BusyStatesExample {
[INFO] [stderr]    |          ----------------- variant in this enum
[INFO] [stderr] 10 |     Idle,
[INFO] [stderr] 11 |     Working,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `speed_check_tcp_minimal` is never used
[INFO] [stderr]  --> src/tests/speed_comparison.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn speed_check_tcp_minimal() {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_tcp_ipc` (lib) generated 2 warnings
[INFO] [stderr] warning: `rust_tcp_ipc` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/rust_tcp_ipc-95770dfc7a88b78f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::speed_comparison::speed_check ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eb3e98d71f7b3769bf17dfebdd8af81bcb4b22a5ab33477132a627020d70e043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3e98d71f7b3769bf17dfebdd8af81bcb4b22a5ab33477132a627020d70e043", kill_on_drop: false }`
[INFO] [stdout] eb3e98d71f7b3769bf17dfebdd8af81bcb4b22a5ab33477132a627020d70e043