[INFO] fetching crate booster 0.5.0...
[INFO] checking booster-0.5.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate booster 0.5.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate booster 0.5.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate booster 0.5.0
[INFO] finished tweaking crates.io crate booster 0.5.0
[INFO] tweaked toml for crates.io crate booster 0.5.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate booster 0.5.0 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rtt-target v0.3.1
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] [stderr]   Downloaded mcp3221 v0.1.0
[INFO] [stderr]   Downloaded rtt-logger v0.2.1
[INFO] [stderr]   Downloaded panic-persist v0.3.0
[INFO] [stderr]   Downloaded cortex-m-rtic-macros v1.1.6
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded fugit-timer v0.1.3
[INFO] [stderr]   Downloaded tca9548 v0.1.0
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded fugit v0.3.6
[INFO] [stderr]   Downloaded cortex-m v0.6.7
[INFO] [stderr]   Downloaded semver v1.0.4
[INFO] [stderr]   Downloaded encdec v0.9.0
[INFO] [stderr]   Downloaded beef v0.5.2
[INFO] [stderr]   Downloaded embedded-storage v0.2.0
[INFO] [stderr]   Downloaded aligned v0.2.0
[INFO] [stderr]   Downloaded minimq v0.7.0
[INFO] [stderr]   Downloaded derive-try-from-primitive v1.0.0
[INFO] [stderr]   Downloaded smlang v0.6.0
[INFO] [stderr]   Downloaded stm32f4xx-hal v0.16.2
[INFO] [stderr]   Downloaded libc v0.2.146
[INFO] [stderr]   Downloaded bbqueue v0.5.1
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.8
[INFO] [stderr]   Downloaded winnow v0.4.7
[INFO] [stderr]   Downloaded microchip-24aa02e48 v0.1.0
[INFO] [stderr]   Downloaded git2 v0.17.2
[INFO] [stderr]   Downloaded cortex-m-log v0.8.0
[INFO] [stderr]   Downloaded libz-sys v1.1.5
[INFO] [stderr]   Downloaded libgit2-sys v0.15.2+1.6.4
[INFO] [stderr]   Downloaded systick-monotonic v1.0.1
[INFO] [stderr]   Downloaded smoltcp-nal v0.3.0
[INFO] [stderr]   Downloaded max6642 v0.1.0
[INFO] [stderr]   Downloaded max6639 v0.1.0
[INFO] [stderr]   Downloaded indexmap v1.6.0
[INFO] [stderr]   Downloaded rtic-syntax v1.0.3
[INFO] [stderr]   Downloaded cortex-m-rtic v1.1.4
[INFO] [stderr]   Downloaded debounced-pin v0.3.0
[INFO] [stderr]   Downloaded encdec-macros v0.9.0
[INFO] [stderr]   Downloaded enum-iterator-derive v1.2.0
[INFO] [stderr]   Downloaded logos-derive v0.12.1
[INFO] [stderr]   Downloaded miniconf v0.7.1
[INFO] [stderr]   Downloaded typenum v1.12.0
[INFO] [stderr]   Downloaded stm32f4 v0.15.1
[INFO] [stderr]   Downloaded synopsys-usb-otg v0.3.2
[INFO] [stderr]   Downloaded smoltcp v0.9.1
[INFO] [stderr]   Downloaded riscv-target v0.1.2
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded crc-any v2.4.3
[INFO] [stderr]   Downloaded darling_core v0.14.2
[INFO] [stderr]   Downloaded encdec-base v0.8.2
[INFO] [stderr]   Downloaded w5500 v0.4.1
[INFO] [stderr]   Downloaded shared-bus v0.2.5
[INFO] [stderr]   Downloaded syn v2.0.3
[INFO] [stderr]   Downloaded rtic-monotonic v1.0.0
[INFO] [stderr]   Downloaded enum-iterator v1.4.0
[INFO] [stderr]   Downloaded ads7924 v0.1.0
[INFO] [stderr]   Downloaded built v0.6.1
[INFO] [stderr]   Downloaded rtic-core v1.0.0
[INFO] [stderr]   Downloaded darling_macro v0.14.2
[INFO] [stderr]   Downloaded aligned v0.3.4
[INFO] [stderr]   Downloaded usbd-serial v0.1.1
[INFO] [stderr]   Downloaded encdec-base v0.9.0
[INFO] [stderr]   Downloaded smlang-macros v0.6.0
[INFO] [stderr]   Downloaded embedded-nal v0.7.0
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] [stderr]   Downloaded gcd v2.1.0
[INFO] [stderr]   Downloaded toml_edit v0.19.11
[INFO] [stderr]   Downloaded jobserver v0.1.24
[INFO] [stderr]   Downloaded pkg-config v0.3.25
[INFO] [stderr]   Downloaded cortex-m v0.5.11
[INFO] [stderr]   Downloaded mono-clock v0.1.1
[INFO] [stderr]   Downloaded nanorand v0.6.1
[INFO] [stderr]   Downloaded time v0.3.20
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.10
[INFO] [stderr]   Downloaded embedded-nal v0.6.0
[INFO] [stderr]   Downloaded no-std-net v0.6.0
[INFO] [stderr]   Downloaded minireq v0.2.0
[INFO] [stderr]   Downloaded serde-json-core v0.5.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded managed v0.8.0
[INFO] [stderr]   Downloaded logos v0.12.1
[INFO] [stderr]   Downloaded ad5627 v0.1.0
[INFO] [stderr]   Downloaded cargo-lock v9.0.0
[INFO] [stderr]   Downloaded dac7571 v0.1.0
[INFO] [stderr]   Downloaded enc424j600 v0.3.0
[INFO] [stderr]   Downloaded varint-rs v2.2.0
[INFO] [stderr]   Downloaded darling v0.14.2
[INFO] [stderr]   Downloaded toml v0.7.5
[INFO] [stderr]   Downloaded embedded-dma v0.2.0
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded miniconf_derive v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72d289b2add570c3446078f5f779e232614e32353e408a0bf92d8325dace0ac9
[INFO] running `Command { std: "docker" "start" "-a" "72d289b2add570c3446078f5f779e232614e32353e408a0bf92d8325dace0ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72d289b2add570c3446078f5f779e232614e32353e408a0bf92d8325dace0ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72d289b2add570c3446078f5f779e232614e32353e408a0bf92d8325dace0ac9", kill_on_drop: false }`
[INFO] [stdout] 72d289b2add570c3446078f5f779e232614e32353e408a0bf92d8325dace0ac9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f698faf7221c6f5bf26e3696be1657598c5ca3a08e713ebd1c611860347385
[INFO] running `Command { std: "docker" "start" "-a" "94f698faf7221c6f5bf26e3696be1657598c5ca3a08e713ebd1c611860347385", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.52/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 embedded-hal v0.2.7
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[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 volatile-register 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" "94f698faf7221c6f5bf26e3696be1657598c5ca3a08e713ebd1c611860347385", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f698faf7221c6f5bf26e3696be1657598c5ca3a08e713ebd1c611860347385", kill_on_drop: false }`
[INFO] [stdout] 94f698faf7221c6f5bf26e3696be1657598c5ca3a08e713ebd1c611860347385
