[INFO] cloning repository https://github.com/nickmertin/bug-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickmertin/bug-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmertin%2Fbug-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmertin%2Fbug-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04978b4a2952cb97f30f11044ebb62efad6daf78
[INFO] checking nickmertin/bug-example against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmertin%2Fbug-example" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nickmertin/bug-example 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-4-tc1/source/.cargo/config
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/nickmertin/bug-example
[INFO] finished tweaking git repo https://github.com/nickmertin/bug-example
[INFO] tweaked toml for git repo https://github.com/nickmertin/bug-example written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nickmertin/bug-example 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded panic-semihosting v0.5.6
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.8
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.14
[INFO] [stderr]   Downloaded embedded-hal v0.2.5
[INFO] [stderr]   Downloaded cortex-m v0.7.2
[INFO] [stderr]   Downloaded stm32g0xx-hal v0.1.0
[INFO] [stderr]   Downloaded stm32g0 v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ad7c8c5226bb973b49ad4fb4350ded0fcd8775038fbeaee7ce49af6e767dde52
[INFO] running `Command { std: "docker" "start" "-a" "ad7c8c5226bb973b49ad4fb4350ded0fcd8775038fbeaee7ce49af6e767dde52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad7c8c5226bb973b49ad4fb4350ded0fcd8775038fbeaee7ce49af6e767dde52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad7c8c5226bb973b49ad4fb4350ded0fcd8775038fbeaee7ce49af6e767dde52", kill_on_drop: false }`
[INFO] [stdout] ad7c8c5226bb973b49ad4fb4350ded0fcd8775038fbeaee7ce49af6e767dde52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7f77d5a4ac8b4ecd91176ea501318d4b104263e4d6db1436257f77495e52ed58
[INFO] running `Command { std: "docker" "start" "-a" "7f77d5a4ac8b4ecd91176ea501318d4b104263e4d6db1436257f77495e52ed58", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling cortex-m v0.7.2
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.14
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling stm32g0 v0.13.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling bug-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking stm32g0xx-hal v0.1.0
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 15.66s
[INFO] running `Command { std: "docker" "inspect" "7f77d5a4ac8b4ecd91176ea501318d4b104263e4d6db1436257f77495e52ed58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f77d5a4ac8b4ecd91176ea501318d4b104263e4d6db1436257f77495e52ed58", kill_on_drop: false }`
[INFO] [stdout] 7f77d5a4ac8b4ecd91176ea501318d4b104263e4d6db1436257f77495e52ed58
[INFO] checking nickmertin/bug-example against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmertin%2Fbug-example" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nickmertin/bug-example on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/nickmertin/bug-example
[INFO] finished tweaking git repo https://github.com/nickmertin/bug-example
[INFO] tweaked toml for git repo https://github.com/nickmertin/bug-example written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nickmertin/bug-example 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 398968d899de562e93b5a90194f6166d27136b825a64e34a3e131ab3167117db
[INFO] running `Command { std: "docker" "start" "-a" "398968d899de562e93b5a90194f6166d27136b825a64e34a3e131ab3167117db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "398968d899de562e93b5a90194f6166d27136b825a64e34a3e131ab3167117db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "398968d899de562e93b5a90194f6166d27136b825a64e34a3e131ab3167117db", kill_on_drop: false }`
[INFO] [stdout] 398968d899de562e93b5a90194f6166d27136b825a64e34a3e131ab3167117db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2a592752a80af68c5c91cb2f58acaa692b18f040cc536ccafd3889c59fd4df1
[INFO] running `Command { std: "docker" "start" "-a" "e2a592752a80af68c5c91cb2f58acaa692b18f040cc536ccafd3889c59fd4df1", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.14
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling stm32g0 v0.13.0
[INFO] [stderr]    Compiling bug-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking embedded-hal v0.2.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking stm32g0xx-hal v0.1.0
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 15.44s
[INFO] running `Command { std: "docker" "inspect" "e2a592752a80af68c5c91cb2f58acaa692b18f040cc536ccafd3889c59fd4df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a592752a80af68c5c91cb2f58acaa692b18f040cc536ccafd3889c59fd4df1", kill_on_drop: false }`
[INFO] [stdout] e2a592752a80af68c5c91cb2f58acaa692b18f040cc536ccafd3889c59fd4df1