[INFO] fetching crate max17048 0.1.0...
[INFO] checking max17048-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate max17048 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate max17048 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate max17048 0.1.0
[INFO] finished tweaking crates.io crate max17048 0.1.0
[INFO] tweaked toml for crates.io crate max17048 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 38 packages
[INFO] [stderr]       Adding aligned v0.2.0 (latest: v0.4.2)
[INFO] [stderr]       Adding aligned v0.3.5 (latest: v0.4.2)
[INFO] [stderr]       Adding as-slice v0.1.5 (latest: v0.2.1)
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.14.0)
[INFO] [stderr]       Adding cast v0.2.7 (latest: v0.3.0)
[INFO] [stderr]       Adding cortex-m v0.5.11 (latest: v0.7.7)
[INFO] [stderr]       Adding cortex-m v0.6.7 (latest: v0.7.7)
[INFO] [stderr]       Adding cortex-m-rt v0.6.15 (latest: v0.7.3)
[INFO] [stderr]       Adding cortex-m-rt-macros v0.6.15 (latest: v0.7.0)
[INFO] [stderr]       Adding cortex-m-semihosting v0.3.7 (latest: v0.5.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.12.4 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.13.3 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding panic-semihosting v0.5.6 (latest: v0.6.0)
[INFO] [stderr]       Adding r0 v0.2.2 (latest: v1.0.0)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding stm32l4 v0.6.0 (latest: v0.15.1)
[INFO] [stderr]       Adding stm32l4xx-hal v0.3.6 (latest: v0.7.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.6.15
[INFO] [stderr]   Downloaded stm32l4xx-hal v0.3.6
[INFO] [stderr]   Downloaded panic-semihosting v0.5.6
[INFO] [stderr]   Downloaded aligned v0.2.0
[INFO] [stderr]   Downloaded as-slice v0.1.5
[INFO] [stderr]   Downloaded aligned v0.3.5
[INFO] [stderr]   Downloaded r0 v0.2.2
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded generic-array v0.13.3
[INFO] [stderr]   Downloaded cortex-m v0.6.7
[INFO] [stderr]   Downloaded cortex-m v0.5.11
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.15
[INFO] [stderr]   Downloaded stm32l4 v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b6d1dfa827ddb3dd57619d8e102f69de5735aa77061a136d08864022f974308
[INFO] running `Command { std: "docker" "start" "-a" "0b6d1dfa827ddb3dd57619d8e102f69de5735aa77061a136d08864022f974308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b6d1dfa827ddb3dd57619d8e102f69de5735aa77061a136d08864022f974308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b6d1dfa827ddb3dd57619d8e102f69de5735aa77061a136d08864022f974308", kill_on_drop: false }`
[INFO] [stdout] 0b6d1dfa827ddb3dd57619d8e102f69de5735aa77061a136d08864022f974308
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 250e37e8145716c7596e40f72b72d85ba1dcb5ed61964a1b6fedb03adeaae096
[INFO] running `Command { std: "docker" "start" "-a" "250e37e8145716c7596e40f72b72d85ba1dcb5ed61964a1b6fedb03adeaae096", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]    Compiling cortex-m v0.5.11
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.6.15
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling stm32l4 v0.6.0
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking max17048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking aligned v0.3.5
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]     Checking stm32l4xx-hal v0.3.6
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.09s
[INFO] running `Command { std: "docker" "inspect" "250e37e8145716c7596e40f72b72d85ba1dcb5ed61964a1b6fedb03adeaae096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "250e37e8145716c7596e40f72b72d85ba1dcb5ed61964a1b6fedb03adeaae096", kill_on_drop: false }`
[INFO] [stdout] 250e37e8145716c7596e40f72b72d85ba1dcb5ed61964a1b6fedb03adeaae096