[INFO] fetching crate dobot 0.1.1...
[INFO] checking dobot-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate dobot 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate dobot 0.1.1
[INFO] finished tweaking crates.io crate dobot 0.1.1
[INFO] tweaked toml for crates.io crate dobot 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dobot 0.1.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 74 packages to latest compatible versions
[INFO] [stderr]       Adding getset v0.0.9 (available: v0.1.6)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.45.1)
[INFO] [stderr]       Adding tokio-serial v4.3.3 (available: v5.4.5)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.8.23)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3968f89dcc1fb376414e47956bc7e15fb03179483609d1f9e62ce270a3366cb
[INFO] running `Command { std: "docker" "start" "-a" "d3968f89dcc1fb376414e47956bc7e15fb03179483609d1f9e62ce270a3366cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3968f89dcc1fb376414e47956bc7e15fb03179483609d1f9e62ce270a3366cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3968f89dcc1fb376414e47956bc7e15fb03179483609d1f9e62ce270a3366cb", kill_on_drop: false }`
[INFO] [stdout] d3968f89dcc1fb376414e47956bc7e15fb03179483609d1f9e62ce270a3366cb
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2ebc2da81e480d3b478295ccb2daf6df7c63918aa8fdd7da5aac27fc7f22ca0
[INFO] running `Command { std: "docker" "start" "-a" "b2ebc2da81e480d3b478295ccb2daf6df7c63918aa8fdd7da5aac27fc7f22ca0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking slab v0.4.10
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking mio-serial v3.3.1
[INFO] [stderr]     Checking tokio-serial v4.3.3
[INFO] [stderr]     Checking dobot v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::array::FixedSizeArray`
[INFO] [stdout]  --> src/message.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{array::FixedSizeArray, convert::TryInto, io::prelude::*, marker::Unpin};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^ no `FixedSizeArray` in `array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `fixed_size_array`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fixed_size_array)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::array::FixedSizeArray`
[INFO] [stdout]  --> src/message.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{array::FixedSizeArray, convert::TryInto, io::prelude::*, marker::Unpin};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^ no `FixedSizeArray` in `array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `fixed_size_array`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fixed_size_array)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dobot` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dobot` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b2ebc2da81e480d3b478295ccb2daf6df7c63918aa8fdd7da5aac27fc7f22ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ebc2da81e480d3b478295ccb2daf6df7c63918aa8fdd7da5aac27fc7f22ca0", kill_on_drop: false }`
[INFO] [stdout] b2ebc2da81e480d3b478295ccb2daf6df7c63918aa8fdd7da5aac27fc7f22ca0