[INFO] fetching crate feather_m0 0.13.0...
[INFO] checking feather_m0-0.13.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate feather_m0 0.13.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate feather_m0 0.13.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate feather_m0 0.13.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate feather_m0 0.13.0
[INFO] tweaked toml for crates.io crate feather_m0 0.13.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate feather_m0 0.13.0 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
[INFO] [stderr]   Downloaded display-interface-i2c v0.4.0
[INFO] [stderr]   Downloaded display-interface-spi v0.4.1
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded usbd-serial v0.1.1
[INFO] [stderr]   Downloaded display-interface v0.4.1
[INFO] [stderr]   Downloaded embedded-graphics-core v0.3.3
[INFO] [stderr]   Downloaded ssd1306 v0.7.1
[INFO] [stderr]   Downloaded drogue-nom-utils v0.1.0
[INFO] [stderr]   Downloaded panic-semihosting v0.5.6
[INFO] [stderr]   Downloaded jlink_rtt v0.2.0
[INFO] [stderr]   Downloaded rtic-monotonic v1.0.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.11
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v1.1.6
[INFO] [stderr]   Downloaded gcd v2.3.0
[INFO] [stderr]   Downloaded cortex-m-rtic v1.1.4
[INFO] [stderr]   Downloaded fugit v0.3.6
[INFO] [stderr]   Downloaded atsamd-hal v0.16.0
[INFO] [stderr]   Downloaded embedded-sdmmc v0.3.0
[INFO] [stderr]   Downloaded seq-macro v0.3.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.3
[INFO] [stderr]   Downloaded rtic-syntax v1.0.3
[INFO] [stderr]   Downloaded rtic-core v1.0.0
[INFO] [stderr]   Downloaded spin v0.9.5
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded embedded-graphics v0.7.1
[INFO] [stderr]   Downloaded atsamd21g v0.12.0
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dde61c35e7af6ee360cd10b9066e55a60a7c36052356207f9a446332be9c8a6e
[INFO] running `Command { std: "docker" "start" "-a" "dde61c35e7af6ee360cd10b9066e55a60a7c36052356207f9a446332be9c8a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dde61c35e7af6ee360cd10b9066e55a60a7c36052356207f9a446332be9c8a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dde61c35e7af6ee360cd10b9066e55a60a7c36052356207f9a446332be9c8a6e", kill_on_drop: false }`
[INFO] [stdout] dde61c35e7af6ee360cd10b9066e55a60a7c36052356207f9a446332be9c8a6e
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7230c4fc2c7bbd28674b007340c7fa2118ed50f9ed0a5eb8a835ba54bea1348d
[INFO] running `Command { std: "docker" "start" "-a" "7230c4fc2c7bbd28674b007340c7fa2118ed50f9ed0a5eb8a835ba54bea1348d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling atsamd21g v0.12.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling paste v1.0.11
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking display-interface v0.4.1
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling cortex-m-rtic v1.1.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking fugit v0.3.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking spin v0.9.5
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling seq-macro v0.3.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling feather_m0 v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking display-interface-i2c v0.4.0
[INFO] [stderr]     Checking display-interface-spi v0.4.1
[INFO] [stderr]     Checking rtic-core v1.0.0
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking micromath v1.1.1
[INFO] [stderr]     Checking rtic-monotonic v1.0.0
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7230c4fc2c7bbd28674b007340c7fa2118ed50f9ed0a5eb8a835ba54bea1348d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7230c4fc2c7bbd28674b007340c7fa2118ed50f9ed0a5eb8a835ba54bea1348d", kill_on_drop: false }`
[INFO] [stdout] 7230c4fc2c7bbd28674b007340c7fa2118ed50f9ed0a5eb8a835ba54bea1348d
[INFO] checking feather_m0-0.13.0 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate feather_m0 0.13.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate feather_m0 0.13.0 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate feather_m0 0.13.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate feather_m0 0.13.0
[INFO] tweaked toml for crates.io crate feather_m0 0.13.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate feather_m0 0.13.0 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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb91cdeb2cc8cf1292df3a9763637f8ee524370221526554c5f762c7f9baf732
[INFO] running `Command { std: "docker" "start" "-a" "eb91cdeb2cc8cf1292df3a9763637f8ee524370221526554c5f762c7f9baf732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb91cdeb2cc8cf1292df3a9763637f8ee524370221526554c5f762c7f9baf732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb91cdeb2cc8cf1292df3a9763637f8ee524370221526554c5f762c7f9baf732", kill_on_drop: false }`
[INFO] [stdout] eb91cdeb2cc8cf1292df3a9763637f8ee524370221526554c5f762c7f9baf732
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3813366f6a27d9e66f36664dcd5967856d7bb3e2afcd45afbc5d8a554295b871
[INFO] running `Command { std: "docker" "start" "-a" "3813366f6a27d9e66f36664dcd5967856d7bb3e2afcd45afbc5d8a554295b871", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking volatile-register v0.2.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling paste v1.0.11
[INFO] [stderr]    Compiling atsamd21g v0.12.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking display-interface v0.4.1
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling cortex-m-rtic v1.1.4
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking fugit v0.3.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking spin v0.9.5
[INFO] [stderr]    Compiling feather_m0 v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling seq-macro v0.3.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking display-interface-spi v0.4.1
[INFO] [stderr]     Checking display-interface-i2c v0.4.0
[INFO] [stderr]     Checking micromath v1.1.1
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking rtic-core v1.0.0
[INFO] [stderr]     Checking rtic-monotonic v1.0.0
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3813366f6a27d9e66f36664dcd5967856d7bb3e2afcd45afbc5d8a554295b871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3813366f6a27d9e66f36664dcd5967856d7bb3e2afcd45afbc5d8a554295b871", kill_on_drop: false }`
[INFO] [stdout] 3813366f6a27d9e66f36664dcd5967856d7bb3e2afcd45afbc5d8a554295b871
