[INFO] fetching crate ssh-muxcontrol 0.1.0...
[INFO] building ssh-muxcontrol-0.1.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate ssh-muxcontrol 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ssh-muxcontrol 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ssh-muxcontrol 0.1.0
[INFO] tweaked toml for crates.io crate ssh-muxcontrol 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ssh-muxcontrol 0.1.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ssh-muxcontrol 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc810fa6aeaee0956c1250abd609bd72a3ba75468acaa26ba5b942ba19031399
[INFO] running `Command { std: "docker" "start" "-a" "fc810fa6aeaee0956c1250abd609bd72a3ba75468acaa26ba5b942ba19031399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc810fa6aeaee0956c1250abd609bd72a3ba75468acaa26ba5b942ba19031399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc810fa6aeaee0956c1250abd609bd72a3ba75468acaa26ba5b942ba19031399", kill_on_drop: false }`
[INFO] [stdout] fc810fa6aeaee0956c1250abd609bd72a3ba75468acaa26ba5b942ba19031399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b820446fba9027caf2e51ee5e8e85f13381602c384458278e48937d9dea5979
[INFO] running `Command { std: "docker" "start" "-a" "4b820446fba9027caf2e51ee5e8e85f13381602c384458278e48937d9dea5979", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling tokio-macros v1.5.0
[INFO] [stderr]    Compiling tokio-pipe v0.2.1
[INFO] [stderr]    Compiling sendfd v0.4.0
[INFO] [stderr]    Compiling ssh-muxcontrol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MuxCmdMessage` is never constructed
[INFO] [stdout]   --> src/commands/mod.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct MuxCmdMessage {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ssh_pid` is never read
[INFO] [stdout]   --> src/commands/check_alive.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct MuxRespCheckAlive {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     ssh_pid: u32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MuxRespCheckAlive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.11s
[INFO] running `Command { std: "docker" "inspect" "4b820446fba9027caf2e51ee5e8e85f13381602c384458278e48937d9dea5979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b820446fba9027caf2e51ee5e8e85f13381602c384458278e48937d9dea5979", kill_on_drop: false }`
[INFO] [stdout] 4b820446fba9027caf2e51ee5e8e85f13381602c384458278e48937d9dea5979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 797d3ff4607370dc1a87398b8c7a55a7fa1cece9f8dc8806b1192e8befa871ee
[INFO] running `Command { std: "docker" "start" "-a" "797d3ff4607370dc1a87398b8c7a55a7fa1cece9f8dc8806b1192e8befa871ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling ssh-muxcontrol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MuxCmdMessage` is never constructed
[INFO] [stdout]   --> src/commands/mod.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct MuxCmdMessage {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ssh_pid` is never read
[INFO] [stdout]   --> src/commands/check_alive.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct MuxRespCheckAlive {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     ssh_pid: u32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MuxRespCheckAlive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MuxCmdMessage` is never constructed
[INFO] [stdout]   --> src/commands/mod.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct MuxCmdMessage {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ssh_pid` is never read
[INFO] [stdout]   --> src/commands/check_alive.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct MuxRespCheckAlive {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     ssh_pid: u32,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MuxRespCheckAlive` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "797d3ff4607370dc1a87398b8c7a55a7fa1cece9f8dc8806b1192e8befa871ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "797d3ff4607370dc1a87398b8c7a55a7fa1cece9f8dc8806b1192e8befa871ee", kill_on_drop: false }`
[INFO] [stdout] 797d3ff4607370dc1a87398b8c7a55a7fa1cece9f8dc8806b1192e8befa871ee