[INFO] cloning repository https://github.com/maciek-rr/fp16_pack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maciek-rr/fp16_pack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaciek-rr%2Ffp16_pack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaciek-rr%2Ffp16_pack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cac3a31c0b8c022bce722967a0b36f574931c060
[INFO] checking maciek-rr/fp16_pack against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaciek-rr%2Ffp16_pack" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maciek-rr/fp16_pack 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] started tweaking git repo https://github.com/maciek-rr/fp16_pack
[INFO] finished tweaking git repo https://github.com/maciek-rr/fp16_pack
[INFO] tweaked toml for git repo https://github.com/maciek-rr/fp16_pack written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/maciek-rr/fp16_pack 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rb-sys v0.9.87
[INFO] [stderr]   Downloaded rb-sys-build v0.9.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1138184333e27a52aa559f9408807973181e1ef1e3b6161385a75086fc907a25
[INFO] running `Command { std: "docker" "start" "-a" "1138184333e27a52aa559f9408807973181e1ef1e3b6161385a75086fc907a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1138184333e27a52aa559f9408807973181e1ef1e3b6161385a75086fc907a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1138184333e27a52aa559f9408807973181e1ef1e3b6161385a75086fc907a25", kill_on_drop: false }`
[INFO] [stdout] 1138184333e27a52aa559f9408807973181e1ef1e3b6161385a75086fc907a25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b6758b8378dc54a4404800c2b0cd1e63f54c9f9140aa497f3137b62afabac8cb
[INFO] running `Command { std: "docker" "start" "-a" "b6758b8378dc54a4404800c2b0cd1e63f54c9f9140aa497f3137b62afabac8cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling bindgen v0.69.2
[INFO] [stderr]    Compiling bitflags v2.4.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling libloading v0.8.1
[INFO] [stderr]    Compiling rb-sys-env v0.1.2
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]    Compiling magnus v0.6.2
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling magnus-macros v0.6.0
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling rb-sys-build v0.9.87
[INFO] [stderr]    Compiling rb-sys v0.9.87
[INFO] [stderr]     Checking fp16_pack v0.1.0 (/opt/rustwide/workdir/ext/fp16_pack)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.02s
[INFO] running `Command { std: "docker" "inspect" "b6758b8378dc54a4404800c2b0cd1e63f54c9f9140aa497f3137b62afabac8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6758b8378dc54a4404800c2b0cd1e63f54c9f9140aa497f3137b62afabac8cb", kill_on_drop: false }`
[INFO] [stdout] b6758b8378dc54a4404800c2b0cd1e63f54c9f9140aa497f3137b62afabac8cb