[INFO] fetching crate degenerate 0.0.1...
[INFO] checking degenerate-0.0.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate degenerate 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate degenerate 0.0.1 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 degenerate 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate degenerate 0.0.1
[INFO] tweaked toml for crates.io crate degenerate 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate degenerate 0.0.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_assertions v1.2.1
[INFO] [stderr]   Downloaded clipboard-win v4.4.1
[INFO] [stderr]   Downloaded camino v1.0.8
[INFO] [stderr]   Downloaded pin-project-internal v1.0.10
[INFO] [stderr]   Downloaded spin v0.9.3
[INFO] [stderr]   Downloaded pin-project v1.0.10
[INFO] [stderr]   Downloaded deflate v1.0.0
[INFO] [stderr]   Downloaded executable-path v1.0.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.30.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.30.0
[INFO] [stderr]   Downloaded lebe v0.5.1
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded image v0.24.2
[INFO] [stderr]   Downloaded indoc v1.0.6
[INFO] [stderr]   Downloaded nalgebra v0.31.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.30.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.6
[INFO] [stderr]   Downloaded tiff v0.7.2
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.46
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.30.0
[INFO] [stderr]   Downloaded syn v1.0.94
[INFO] [stderr]   Downloaded io-lifetimes v0.6.1
[INFO] [stderr]   Downloaded rustyline v9.1.2
[INFO] [stderr]   Downloaded strum_macros v0.24.0
[INFO] [stderr]   Downloaded strum v0.24.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.38
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.80
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.80
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.80
[INFO] [stderr]   Downloaded weezl v0.1.6
[INFO] [stderr]   Downloaded ctor v0.1.22
[INFO] [stderr]   Downloaded fd-lock v3.0.5
[INFO] [stderr]   Downloaded unindent v0.1.9
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.80
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]   Downloaded windows_i686_msvc v0.30.0
[INFO] [stderr]   Downloaded flume v0.10.12
[INFO] [stderr]   Downloaded rustix v0.34.6
[INFO] [stderr]   Downloaded exr v1.4.2
[INFO] [stderr]   Downloaded png v0.17.5
[INFO] [stderr]   Downloaded miniz_oxide v0.5.1
[INFO] [stderr]   Downloaded flate2 v1.0.23
[INFO] [stderr]   Downloaded num-complex v0.4.1
[INFO] [stderr]   Downloaded wide v0.7.4
[INFO] [stderr]   Downloaded rand_derive2 v0.1.17
[INFO] [stderr]   Downloaded str-buf v1.0.5
[INFO] [stderr]   Downloaded js-sys v0.3.57
[INFO] [stderr]   Downloaded simba v0.7.1
[INFO] [stderr]   Downloaded proc_macro2_helper v0.2.9
[INFO] [stderr]   Downloaded windows-sys v0.30.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14450a7d41aaca4aa0c00f803b69c4f7f7935bf912c55e6bc6e6dc549920c201
[INFO] running `Command { std: "docker" "start" "-a" "14450a7d41aaca4aa0c00f803b69c4f7f7935bf912c55e6bc6e6dc549920c201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14450a7d41aaca4aa0c00f803b69c4f7f7935bf912c55e6bc6e6dc549920c201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14450a7d41aaca4aa0c00f803b69c4f7f7935bf912c55e6bc6e6dc549920c201", kill_on_drop: false }`
[INFO] [stdout] 14450a7d41aaca4aa0c00f803b69c4f7f7935bf912c55e6bc6e6dc549920c201
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebb006ffd9a1c510074546bed5697d966cfb3b766b6fd38f7a90797aa34daab2
[INFO] running `Command { std: "docker" "start" "-a" "ebb006ffd9a1c510074546bed5697d966cfb3b766b6fd38f7a90797aa34daab2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.94
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling io-lifetimes v0.6.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.80
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling rustix v0.34.6
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking spin v0.9.3
[INFO] [stderr]     Checking linux-raw-sys v0.0.46
[INFO] [stderr]     Checking weezl v0.1.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking wide v0.7.4
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking unindent v0.1.9
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]     Checking executable-path v1.0.0
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking flate2 v1.0.23
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking simba v0.7.1
[INFO] [stderr]     Checking fd-lock v3.0.5
[INFO] [stderr]     Checking jpeg-decoder v0.2.6
[INFO] [stderr]     Checking rustyline v9.1.2
[INFO] [stderr]     Checking tiff v0.7.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling proc_macro2_helper v0.2.9
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling strum_macros v0.24.0
[INFO] [stderr]    Compiling rand_derive2 v0.1.17
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking strum v0.24.0
[INFO] [stderr]     Checking nalgebra v0.31.0
[INFO] [stderr]     Checking exr v1.4.2
[INFO] [stderr]     Checking js-sys v0.3.57
[INFO] [stderr]     Checking image v0.24.2
[INFO] [stderr]     Checking web-sys v0.3.57
[INFO] [stderr]     Checking console_log v0.2.0
[INFO] [stderr]     Checking degenerate v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.80
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "ebb006ffd9a1c510074546bed5697d966cfb3b766b6fd38f7a90797aa34daab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebb006ffd9a1c510074546bed5697d966cfb3b766b6fd38f7a90797aa34daab2", kill_on_drop: false }`
[INFO] [stdout] ebb006ffd9a1c510074546bed5697d966cfb3b766b6fd38f7a90797aa34daab2