[INFO] fetching crate mt6701 0.2.5...
[INFO] testing mt6701-0.2.5 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate mt6701 0.2.5 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate mt6701 0.2.5
[INFO] finished tweaking crates.io crate mt6701 0.2.5
[INFO] tweaked toml for crates.io crate mt6701 0.2.5 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mt6701 0.2.5 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mt6701 0.2.5 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b36e372b245097623948cdd774ae9490a40de3840cf3e157bdd42e262b5cb55
[INFO] running `Command { std: "docker" "start" "-a" "5b36e372b245097623948cdd774ae9490a40de3840cf3e157bdd42e262b5cb55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b36e372b245097623948cdd774ae9490a40de3840cf3e157bdd42e262b5cb55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b36e372b245097623948cdd774ae9490a40de3840cf3e157bdd42e262b5cb55", kill_on_drop: false }`
[INFO] [stdout] 5b36e372b245097623948cdd774ae9490a40de3840cf3e157bdd42e262b5cb55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59ff4dea955c26a2f9089ca36959668c1cf58668d799a45bf6bb462e96920142
[INFO] running `Command { std: "docker" "start" "-a" "59ff4dea955c26a2f9089ca36959668c1cf58668d799a45bf6bb462e96920142", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling mt6701 v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "59ff4dea955c26a2f9089ca36959668c1cf58668d799a45bf6bb462e96920142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ff4dea955c26a2f9089ca36959668c1cf58668d799a45bf6bb462e96920142", kill_on_drop: false }`
[INFO] [stdout] 59ff4dea955c26a2f9089ca36959668c1cf58668d799a45bf6bb462e96920142
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cb05dde3c9d8e618998f8e520bf867bf356e425c0ed3bd40be5e2fd67a36cd7
[INFO] running `Command { std: "docker" "start" "-a" "8cb05dde3c9d8e618998f8e520bf867bf356e425c0ed3bd40be5e2fd67a36cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling debug-helper v0.3.13
[INFO] [stderr]    Compiling frunk_core v0.4.2
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling rp2040-pac v0.5.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling crc-any v2.4.3
[INFO] [stderr]    Compiling volatile-register v0.2.2
[INFO] [stderr]    Compiling usb-device v0.2.9
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling fugit v0.3.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling mt6701 v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rp2040-boot2 v0.3.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.41
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.2
[INFO] [stderr]    Compiling frunk_derives v0.4.2
[INFO] [stderr]    Compiling frunk v0.4.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr]    Compiling pio v0.2.1
[INFO] [stderr]    Compiling rp2040-hal-macros v0.1.0
[INFO] [stderr]    Compiling rp2040-hal v0.9.1
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `angle`
[INFO] [stdout]   --> examples/pico.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let angle = sensor.get_angle();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_angle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turns`
[INFO] [stdout]   --> examples/pico.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let turns = sensor.get_turns();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_turns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `position`
[INFO] [stdout]   --> examples/pico.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let position = sensor.get_position();
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_position`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `velocity`
[INFO] [stdout]   --> examples/pico.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let velocity = sensor.get_velocity();
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_velocity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mt6701` (example "pico") due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8cb05dde3c9d8e618998f8e520bf867bf356e425c0ed3bd40be5e2fd67a36cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb05dde3c9d8e618998f8e520bf867bf356e425c0ed3bd40be5e2fd67a36cd7", kill_on_drop: false }`
[INFO] [stdout] 8cb05dde3c9d8e618998f8e520bf867bf356e425c0ed3bd40be5e2fd67a36cd7