[INFO] fetching crate nucleo-h7xx 0.2.1...
[INFO] checking nucleo-h7xx-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate nucleo-h7xx 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate nucleo-h7xx 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate nucleo-h7xx 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nucleo-h7xx 0.2.1
[INFO] tweaked toml for crates.io crate nucleo-h7xx 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate nucleo-h7xx 0.2.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.10
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded cortex-m-log v0.7.0
[INFO] [stderr]   Downloaded embedded-timeout-macros v0.3.0
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded panic-itm v0.4.2
[INFO] [stderr]   Downloaded gcd v2.1.0
[INFO] [stderr]   Downloaded fugit v0.3.6
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.1
[INFO] [stderr]   Downloaded smoltcp v0.8.1
[INFO] [stderr]   Downloaded cortex-m v0.7.6
[INFO] [stderr]   Downloaded managed v0.8.0
[INFO] [stderr]   Downloaded stm32h7xx-hal v0.13.0
[INFO] [stderr]   Downloaded stm32h7 v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aaae0bd5d037b7d38d583486f99db7fd997df7d1453fee9140417972e5dde309
[INFO] running `Command { std: "docker" "start" "-a" "aaae0bd5d037b7d38d583486f99db7fd997df7d1453fee9140417972e5dde309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaae0bd5d037b7d38d583486f99db7fd997df7d1453fee9140417972e5dde309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaae0bd5d037b7d38d583486f99db7fd997df7d1453fee9140417972e5dde309", kill_on_drop: false }`
[INFO] [stdout] aaae0bd5d037b7d38d583486f99db7fd997df7d1453fee9140417972e5dde309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca45f9d67d971759c72c7995b9393c4f5607575a6334081b23d0cbca56c3c2db
[INFO] running `Command { std: "docker" "start" "-a" "ca45f9d67d971759c72c7995b9393c4f5607575a6334081b23d0cbca56c3c2db", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling stm32h7 v0.15.1
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling cortex-m-log v0.7.0
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling nucleo-h7xx v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking embedded-timeout-macros v0.3.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking gcd v2.1.0
[INFO] [stderr]     Checking fugit v0.3.6
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking rtt-target v0.3.1
[INFO] [stderr]     Checking panic-itm v0.4.2
[INFO] [stderr]     Checking panic-semihosting v0.6.0
[INFO] [stderr]     Checking panic-rtt-target v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]     Checking stm32h7xx-hal v0.13.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.19s
[INFO] running `Command { std: "docker" "inspect" "ca45f9d67d971759c72c7995b9393c4f5607575a6334081b23d0cbca56c3c2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca45f9d67d971759c72c7995b9393c4f5607575a6334081b23d0cbca56c3c2db", kill_on_drop: false }`
[INFO] [stdout] ca45f9d67d971759c72c7995b9393c4f5607575a6334081b23d0cbca56c3c2db
[INFO] checking nucleo-h7xx-0.2.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate nucleo-h7xx 0.2.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate nucleo-h7xx 0.2.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate nucleo-h7xx 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nucleo-h7xx 0.2.1
[INFO] tweaked toml for crates.io crate nucleo-h7xx 0.2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate nucleo-h7xx 0.2.1 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1096785c4d5b704a2c8b71e7fe4be515e2dfc05c7a3cbd03bea9d354876c182e
[INFO] running `Command { std: "docker" "start" "-a" "1096785c4d5b704a2c8b71e7fe4be515e2dfc05c7a3cbd03bea9d354876c182e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1096785c4d5b704a2c8b71e7fe4be515e2dfc05c7a3cbd03bea9d354876c182e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1096785c4d5b704a2c8b71e7fe4be515e2dfc05c7a3cbd03bea9d354876c182e", kill_on_drop: false }`
[INFO] [stdout] 1096785c4d5b704a2c8b71e7fe4be515e2dfc05c7a3cbd03bea9d354876c182e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56e9493ce6323959611397fb7f7c14afb614f3309d5c2f9c68d6668180a548a1
[INFO] running `Command { std: "docker" "start" "-a" "56e9493ce6323959611397fb7f7c14afb614f3309d5c2f9c68d6668180a548a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling stm32h7 v0.15.1
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking embedded-dma v0.2.0
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]    Compiling cortex-m-log v0.7.0
[INFO] [stderr]    Compiling nucleo-h7xx v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking embedded-timeout-macros v0.3.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking gcd v2.1.0
[INFO] [stderr]     Checking fugit v0.3.6
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/cortex-m-0.7.6/src/call_asm.rs:19:21
[INFO] [stdout]     |
[INFO] [stdout] 19  |                     $func($($args),*)
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ cannot satisfy `_ -> _`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/cortex-m-0.7.6/src/asm.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 189 |     call_asm!(__bootstrap(msp: u32, rv: u32) -> !);
[INFO] [stdout]     |     ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `call_asm` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cortex-m` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "56e9493ce6323959611397fb7f7c14afb614f3309d5c2f9c68d6668180a548a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e9493ce6323959611397fb7f7c14afb614f3309d5c2f9c68d6668180a548a1", kill_on_drop: false }`
[INFO] [stdout] 56e9493ce6323959611397fb7f7c14afb614f3309d5c2f9c68d6668180a548a1