[INFO] fetching crate twiggy-opt 0.7.0...
[INFO] checking twiggy-opt-0.7.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate twiggy-opt 0.7.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate twiggy-opt 0.7.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate twiggy-opt 0.7.0
[INFO] finished tweaking crates.io crate twiggy-opt 0.7.0
[INFO] tweaked toml for crates.io crate twiggy-opt 0.7.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 69 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding cpp_demangle v0.3.5 (latest: v0.4.3)
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding wasmparser v0.35.3 (latest: v0.202.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded twiggy-traits v0.7.0
[INFO] [stderr]   Downloaded frozen v1.0.0
[INFO] [stderr]   Downloaded wasmparser v0.35.3
[INFO] [stderr]   Downloaded twiggy-ir v0.7.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11d9539456d2d4dc73f8adb2bbfdec843e780d3a6f90b9b0afffbda53460328a
[INFO] running `Command { std: "docker" "start" "-a" "11d9539456d2d4dc73f8adb2bbfdec843e780d3a6f90b9b0afffbda53460328a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11d9539456d2d4dc73f8adb2bbfdec843e780d3a6f90b9b0afffbda53460328a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11d9539456d2d4dc73f8adb2bbfdec843e780d3a6f90b9b0afffbda53460328a", kill_on_drop: false }`
[INFO] [stdout] 11d9539456d2d4dc73f8adb2bbfdec843e780d3a6f90b9b0afffbda53460328a
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd13a4dfa76c5ecfcaae63e8203123df30295c3f06fd3a78863818f852addb75
[INFO] running `Command { std: "docker" "start" "-a" "bd13a4dfa76c5ecfcaae63e8203123df30295c3f06fd3a78863818f852addb75", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking frozen v1.0.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking wasmparser v0.35.3
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling twiggy-opt v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking twiggy-ir v0.7.0
[INFO] [stderr]     Checking twiggy-traits v0.7.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.16s
[INFO] running `Command { std: "docker" "inspect" "bd13a4dfa76c5ecfcaae63e8203123df30295c3f06fd3a78863818f852addb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd13a4dfa76c5ecfcaae63e8203123df30295c3f06fd3a78863818f852addb75", kill_on_drop: false }`
[INFO] [stdout] bd13a4dfa76c5ecfcaae63e8203123df30295c3f06fd3a78863818f852addb75