[INFO] cloning repository https://github.com/sinitcin/poll_devices
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinitcin/poll_devices" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinitcin%2Fpoll_devices", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinitcin%2Fpoll_devices'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91f3c8217293c02b9f21a8c82f6c31b8ce9bbfbb
[INFO] testing sinitcin/poll_devices against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinitcin%2Fpoll_devices" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinitcin/poll_devices on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sinitcin/poll_devices
[INFO] finished tweaking git repo https://github.com/sinitcin/poll_devices
[INFO] tweaked toml for git repo https://github.com/sinitcin/poll_devices written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/sinitcin/poll_devices already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.28
[INFO] [stderr]   Downloaded serde_derive v1.0.82
[INFO] [stderr]   Downloaded syn v0.15.23
[INFO] [stderr]   Downloaded redox_syscall v0.1.44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0686652566bf98b1e85d9a5f151f60d381cf55b3807fdad7f82847accc8f9e0
[INFO] running `Command { std: "docker" "start" "-a" "d0686652566bf98b1e85d9a5f151f60d381cf55b3807fdad7f82847accc8f9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0686652566bf98b1e85d9a5f151f60d381cf55b3807fdad7f82847accc8f9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0686652566bf98b1e85d9a5f151f60d381cf55b3807fdad7f82847accc8f9e0", kill_on_drop: false }`
[INFO] [stdout] d0686652566bf98b1e85d9a5f151f60d381cf55b3807fdad7f82847accc8f9e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6305127c83132b16253e7e46a8a8591f0f7440e315b3e5b7cb65820b93b3f239
[INFO] running `Command { std: "docker" "start" "-a" "6305127c83132b16253e7e46a8a8591f0f7440e315b3e5b7cb65820b93b3f239", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling libconfig v0.1.0 (/opt/rustwide/workdir/libconfig)
[INFO] [stderr]    Compiling lru-cache v0.1.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> libconfig/src/lib.rs:68:49
[INFO] [stdout]    |
[INFO] [stdout] 68 |             .set(format!("host_{}", &self.base).as_ref(), host);
[INFO] [stdout]    |                  -------------------------------^^^^^^--
[INFO] [stdout]    |                  |                              |
[INFO] [stdout]    |                  |                              cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                  this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> libconfig/src/lib.rs:87:49
[INFO] [stdout]    |
[INFO] [stdout] 87 |             .set(format!("port_{}", &self.base).as_ref(), format!("{}", port));
[INFO] [stdout]    |                  -------------------------------^^^^^^--
[INFO] [stdout]    |                  |                              |
[INFO] [stdout]    |                  |                              cannot infer type for type parameter `T` declared on the trait `AsRef`
[INFO] [stdout]    |                  this method call resolves to `&T`
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `String: AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libconfig`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6305127c83132b16253e7e46a8a8591f0f7440e315b3e5b7cb65820b93b3f239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6305127c83132b16253e7e46a8a8591f0f7440e315b3e5b7cb65820b93b3f239", kill_on_drop: false }`
[INFO] [stdout] 6305127c83132b16253e7e46a8a8591f0f7440e315b3e5b7cb65820b93b3f239