[INFO] cloning repository https://github.com/AndreAshmeade/RustZipper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndreAshmeade/RustZipper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreAshmeade%2FRustZipper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreAshmeade%2FRustZipper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 134c0c8465b8cae30c5443d0aa906f20a67b33f2
[INFO] checking AndreAshmeade/RustZipper against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndreAshmeade%2FRustZipper" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
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Updating files: 100% (848/848), done.
[INFO] validating manifest of git repo https://github.com/AndreAshmeade/RustZipper 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/AndreAshmeade/RustZipper
[INFO] finished tweaking git repo https://github.com/AndreAshmeade/RustZipper
[INFO] tweaked toml for git repo https://github.com/AndreAshmeade/RustZipper written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AndreAshmeade/RustZipper 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 cc v1.0.88
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95e51eefe4876fbf9c1b28116c7ac23fcf54854f750fb9cd8fdcd030d7f68647
[INFO] running `Command { std: "docker" "start" "-a" "95e51eefe4876fbf9c1b28116c7ac23fcf54854f750fb9cd8fdcd030d7f68647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95e51eefe4876fbf9c1b28116c7ac23fcf54854f750fb9cd8fdcd030d7f68647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e51eefe4876fbf9c1b28116c7ac23fcf54854f750fb9cd8fdcd030d7f68647", kill_on_drop: false }`
[INFO] [stdout] 95e51eefe4876fbf9c1b28116c7ac23fcf54854f750fb9cd8fdcd030d7f68647
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 850fb98584c2f4333bae66ed2b33f2532fbdfd8c6a39d406d32d87920fef037a
[INFO] running `Command { std: "docker" "start" "-a" "850fb98584c2f4333bae66ed2b33f2532fbdfd8c6a39d406d32d87920fef037a", kill_on_drop: false }`
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking password-hash v0.4.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]    Compiling cc v1.0.88
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking zipfile v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.02s
[INFO] running `Command { std: "docker" "inspect" "850fb98584c2f4333bae66ed2b33f2532fbdfd8c6a39d406d32d87920fef037a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "850fb98584c2f4333bae66ed2b33f2532fbdfd8c6a39d406d32d87920fef037a", kill_on_drop: false }`
[INFO] [stdout] 850fb98584c2f4333bae66ed2b33f2532fbdfd8c6a39d406d32d87920fef037a