[INFO] cloning repository https://github.com/linux-automation/tacd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/linux-automation/tacd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinux-automation%2Ftacd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinux-automation%2Ftacd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 740ffaca3eb8560a556f7d942083928f290d8a19
[INFO] checking linux-automation/tacd against master#5257aee7dd163d21d32fa904578d4fb0f4c91b79 for pr-116494-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinux-automation%2Ftacd" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/linux-automation/tacd on toolchain 5257aee7dd163d21d32fa904578d4fb0f4c91b79
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/linux-automation/tacd
[INFO] finished tweaking git repo https://github.com/linux-automation/tacd
[INFO] tweaked toml for git repo https://github.com/linux-automation/tacd written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/linux-automation/tacd 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" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sval_buffer v2.10.2
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[INFO] [stderr]   Downloaded unique-token v0.2.0
[INFO] [stderr]   Downloaded libiio-sys v0.3.1
[INFO] [stderr]   Downloaded industrial-io v0.5.2
[INFO] [stderr]   Downloaded async-tungstenite v0.22.2
[INFO] [stderr]   Downloaded evdev v0.12.1
[INFO] [stderr]   Downloaded framebuffer v0.3.1
[INFO] [stderr]   Downloaded mqtt-protocol v0.11.2
[INFO] [stderr]   Downloaded numtoa v0.2.4
[INFO] [stderr]   Downloaded thread-priority v0.13.1
[INFO] [stderr]   Downloaded sysfs-class v0.1.3
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef38b3ba9d98d1614b943c58ac580312f2f44a2cabd9c0650432fde122c1a293
[INFO] running `Command { std: "docker" "start" "-a" "ef38b3ba9d98d1614b943c58ac580312f2f44a2cabd9c0650432fde122c1a293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef38b3ba9d98d1614b943c58ac580312f2f44a2cabd9c0650432fde122c1a293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef38b3ba9d98d1614b943c58ac580312f2f44a2cabd9c0650432fde122c1a293", kill_on_drop: false }`
[INFO] [stdout] ef38b3ba9d98d1614b943c58ac580312f2f44a2cabd9c0650432fde122c1a293
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c937ca745d6d56db21f6bb0d5d525f71691081ed75bb3930a3000e0a873c58b
[INFO] running `Command { std: "docker" "start" "-a" "3c937ca745d6d56db21f6bb0d5d525f71691081ed75bb3930a3000e0a873c58b", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/digital_io/gpio/test.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/5257aee7dd163d21d32fa904578d4fb0f4c91b79/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/digital_io/gpio/test.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct LineEvent(u8);
[INFO] [stdout]    |            --------- ^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct LineEvent(());
[INFO] [stdout]    |                      ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.97s
[INFO] running `Command { std: "docker" "inspect" "3c937ca745d6d56db21f6bb0d5d525f71691081ed75bb3930a3000e0a873c58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c937ca745d6d56db21f6bb0d5d525f71691081ed75bb3930a3000e0a873c58b", kill_on_drop: false }`
[INFO] [stdout] 3c937ca745d6d56db21f6bb0d5d525f71691081ed75bb3930a3000e0a873c58b