[INFO] fetching crate atsamx7x-hal 0.0.2...
[INFO] testing atsamx7x-hal-0.0.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate atsamx7x-hal 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate atsamx7x-hal 0.0.2 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atsamx7x-hal 0.0.2
[INFO] finished tweaking crates.io crate atsamx7x-hal 0.0.2
[INFO] tweaked toml for crates.io crate atsamx7x-hal 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94e1e8045197d9860f0242d4cf086728195ca587b17fac3660f7ce02c53407c5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "94e1e8045197d9860f0242d4cf086728195ca587b17fac3660f7ce02c53407c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94e1e8045197d9860f0242d4cf086728195ca587b17fac3660f7ce02c53407c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94e1e8045197d9860f0242d4cf086728195ca587b17fac3660f7ce02c53407c5", kill_on_drop: false }`
[INFO] [stdout] 94e1e8045197d9860f0242d4cf086728195ca587b17fac3660f7ce02c53407c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8df523849e515e75148a1201446cdb59c0d5e896a6e0358cbdc8b0b5ed691b7a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8df523849e515e75148a1201446cdb59c0d5e896a6e0358cbdc8b0b5ed691b7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling atsamx7x-hal v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `target_device`?
[INFO] [stdout]   --> src/serial.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | use crate::target_device::{
[INFO] [stdout]    |            ^^^^^^^^^^^^^ maybe a missing crate `target_device`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::target_device`
[INFO] [stdout]  --> src/serial.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::target_device::{ UART0, UART1, UART2, USART0, USART1 };
[INFO] [stdout]   |            ^^^^^^^^^^^^^ maybe a missing crate `target_device`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UARTRegisterBlock` in this scope
[INFO] [stdout]    --> src/serial.rs:150:22
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn write_uart(regs: &UARTRegisterBlock, word: u8) -> nb::Result<(), Error> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `USARTRegisterBlock` in this scope
[INFO] [stdout]    --> src/serial.rs:160:23
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn write_usart(regs: &USARTRegisterBlock, word: u8) -> nb::Result<(), Error> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UARTRegisterBlock` in this scope
[INFO] [stdout]    --> src/serial.rs:170:22
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn flush_uart(regs: &UARTRegisterBlock) -> nb::Result<(), Error> {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `USARTRegisterBlock` in this scope
[INFO] [stdout]    --> src/serial.rs:178:23
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn flush_usart(regs: &USARTRegisterBlock) -> nb::Result<(), Error> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `atsamx7x-hal`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "8df523849e515e75148a1201446cdb59c0d5e896a6e0358cbdc8b0b5ed691b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8df523849e515e75148a1201446cdb59c0d5e896a6e0358cbdc8b0b5ed691b7a", kill_on_drop: false }`
[INFO] [stdout] 8df523849e515e75148a1201446cdb59c0d5e896a6e0358cbdc8b0b5ed691b7a