[INFO] cloning repository https://github.com/ninjasource/nrf-tester
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ninjasource/nrf-tester" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fninjasource%2Fnrf-tester", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fninjasource%2Fnrf-tester'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69597f1063eaac9d27705d6f38754e27efb30a04
[INFO] testing ninjasource/nrf-tester against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fninjasource%2Fnrf-tester" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ninjasource/nrf-tester on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ninjasource/nrf-tester
[INFO] finished tweaking git repo https://github.com/ninjasource/nrf-tester
[INFO] tweaked toml for git repo https://github.com/ninjasource/nrf-tester written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ninjasource/nrf-tester already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded defmt-macros v0.2.0
[INFO] [stderr]   Downloaded alloc-cortex-m v0.4.1
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v0.5.2
[INFO] [stderr]   Downloaded defmt v0.2.1
[INFO] [stderr]   Downloaded cortex-m-rtic v0.5.6
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.13
[INFO] [stderr]   Downloaded panic-probe v0.1.0
[INFO] [stderr]   Downloaded rtic-syntax v0.4.0
[INFO] [stderr]   Downloaded rtic-core v0.3.1
[INFO] [stderr]   Downloaded nrf52840-pac v0.9.0
[INFO] [stderr]   Downloaded defmt-parser v0.2.0
[INFO] [stderr]   Downloaded az v1.1.1
[INFO] [stderr]   Downloaded nrf52840-hal v0.12.1
[INFO] [stderr]   Downloaded aligned v0.3.4
[INFO] [stderr]   Downloaded usb-device v0.2.8
[INFO] [stderr]   Downloaded cortex-m v0.7.2
[INFO] [stderr]   Downloaded fixed v1.7.0
[INFO] [stderr]   Downloaded nrf-hal-common v0.12.1
[INFO] [stderr]   Downloaded defmt-rtt v0.2.0
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.2
[INFO] [stderr]   Downloaded embedded-dma v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0e435dc43824cece827bd416863eecc71d919a07f139ae4818eb4b10b10f973
[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" "d0e435dc43824cece827bd416863eecc71d919a07f139ae4818eb4b10b10f973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0e435dc43824cece827bd416863eecc71d919a07f139ae4818eb4b10b10f973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e435dc43824cece827bd416863eecc71d919a07f139ae4818eb4b10b10f973", kill_on_drop: false }`
[INFO] [stdout] d0e435dc43824cece827bd416863eecc71d919a07f139ae4818eb4b10b10f973
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf5da9e78bf64777e8231a43e7bdc2d23322e2679bd1efd1cd44e727081564a5
[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" "cf5da9e78bf64777e8231a43e7bdc2d23322e2679bd1efd1cd44e727081564a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling cortex-m v0.7.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling defmt-parser v0.2.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling atomic-polyfill v0.1.2
[INFO] [stderr]    Compiling nrf52840-pac v0.9.0
[INFO] [stderr]    Compiling futures-io v0.3.13
[INFO] [stderr]    Compiling fixed v1.7.0
[INFO] [stderr]    Compiling embassy v0.1.0 (https://github.com/embassy-rs/embassy#7094c4e6)
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-task-0.3.13/src/lib.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "cfg-target-has-atomic", feature(cfg_target_has_atomic))]
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.13/src/lib.rs:3:48
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "cfg-target-has-atomic", feature(cfg_target_has_atomic))]
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nrf-hal-common v0.12.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-task` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cf5da9e78bf64777e8231a43e7bdc2d23322e2679bd1efd1cd44e727081564a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf5da9e78bf64777e8231a43e7bdc2d23322e2679bd1efd1cd44e727081564a5", kill_on_drop: false }`
[INFO] [stdout] cf5da9e78bf64777e8231a43e7bdc2d23322e2679bd1efd1cd44e727081564a5