[INFO] fetching crate hc14-at-rs 0.2.3...
[INFO] testing hc14-at-rs-0.2.3 against 1.75.0 for beta-1.76-1
[INFO] extracting crate hc14-at-rs 0.2.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate hc14-at-rs 0.2.3 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate hc14-at-rs 0.2.3
[INFO] finished tweaking crates.io crate hc14-at-rs 0.2.3
[INFO] tweaked toml for crates.io crate hc14-at-rs 0.2.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate hc14-at-rs 0.2.3 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded fugit-timer v0.1.3
[INFO] [stderr]   Downloaded fugit v0.3.7
[INFO] [stderr]   Downloaded alloc-cortex-m v0.4.4
[INFO] [stderr]   Downloaded embedded-dma v0.2.0
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.5.0
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.5
[INFO] [stderr]   Downloaded bxcan v0.7.0
[INFO] [stderr]   Downloaded stm32-usbd v0.6.0
[INFO] [stderr]   Downloaded gcd v2.3.0
[INFO] [stderr]   Downloaded stm32f1xx-hal v0.10.0
[INFO] [stderr]   Downloaded stm32f1 v0.15.1
[INFO] [stderr]   Downloaded at-commands v0.5.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4fe5583d23a5047d807a0e704dfb6774332a69db79e0a014e6d93f696077d19
[INFO] running `Command { std: "docker" "start" "-a" "b4fe5583d23a5047d807a0e704dfb6774332a69db79e0a014e6d93f696077d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4fe5583d23a5047d807a0e704dfb6774332a69db79e0a014e6d93f696077d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4fe5583d23a5047d807a0e704dfb6774332a69db79e0a014e6d93f696077d19", kill_on_drop: false }`
[INFO] [stdout] b4fe5583d23a5047d807a0e704dfb6774332a69db79e0a014e6d93f696077d19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f03a9f820e52a56aa5d82325dbb1af2aeb0311affcf2b7f5a9265830dce74bd5
[INFO] running `Command { std: "docker" "start" "-a" "f03a9f820e52a56aa5d82325dbb1af2aeb0311affcf2b7f5a9265830dce74bd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling stm32-usbd v0.6.0
[INFO] [stderr]    Compiling stm32f1 v0.15.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling usb-device v0.2.9
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling bare-metal v1.0.0
[INFO] [stderr]    Compiling fugit v0.3.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling bxcan v0.7.0
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling linked_list_allocator v0.10.5
[INFO] [stderr]    Compiling at-commands v0.5.4
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling fugit-timer v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling alloc-cortex-m v0.4.4
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling num-derive v0.4.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling stm32f1xx-hal v0.10.0
[INFO] [stderr]    Compiling hc14-at-rs v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_range)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_range)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout]   |
[INFO] [stdout]   = note: this can occur when a binary crate with `#![no_std]` is compiled for a target where `eh_personality` is defined in the standard library
[INFO] [stdout]   = help: you may be able to compile for a target that doesn't need `eh_personality`, specify a target with `--target` or in `.cargo/config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hc14-at-rs` (bin "hc14-at-rs") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "f03a9f820e52a56aa5d82325dbb1af2aeb0311affcf2b7f5a9265830dce74bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f03a9f820e52a56aa5d82325dbb1af2aeb0311affcf2b7f5a9265830dce74bd5", kill_on_drop: false }`
[INFO] [stdout] f03a9f820e52a56aa5d82325dbb1af2aeb0311affcf2b7f5a9265830dce74bd5
