[INFO] cloning repository https://github.com/piperswe/nix_evaluator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/piperswe/nix_evaluator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiperswe%2Fnix_evaluator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiperswe%2Fnix_evaluator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5320ff07362e51db16e3522bdf6433360d42a14a
[INFO] checking piperswe/nix_evaluator against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiperswe%2Fnix_evaluator" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/piperswe/nix_evaluator 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 git repo https://github.com/piperswe/nix_evaluator
[INFO] finished tweaking git repo https://github.com/piperswe/nix_evaluator
[INFO] tweaked toml for git repo https://github.com/piperswe/nix_evaluator written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/piperswe/nix_evaluator 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 endian-type v0.1.2
[INFO] [stderr]   Downloaded rustyline v9.0.0
[INFO] [stderr]   Downloaded owo-colors v1.3.0
[INFO] [stderr]   Downloaded rowan v0.12.6
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded eyre v0.6.5
[INFO] [stderr]   Downloaded hashbrown v0.9.1
[INFO] [stderr]   Downloaded color-spantrace v0.1.6
[INFO] [stderr]   Downloaded rnix v0.9.1
[INFO] [stderr]   Downloaded color-eyre v0.5.11
[INFO] [stderr]   Downloaded nix v0.22.2
[INFO] [stderr]   Downloaded radix_trie v0.2.1
[INFO] [stderr]   Downloaded rpds v0.10.0
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded clipboard-win v4.2.2
[INFO] [stderr]   Downloaded fd-lock v3.0.0
[INFO] [stderr]   Downloaded md5 v0.7.0
[INFO] [stderr]   Downloaded cbitset v0.2.0
[INFO] [stderr]   Downloaded countme v2.0.4
[INFO] [stderr]   Downloaded text-size v1.1.0
[INFO] [stderr]   Downloaded smol_str v0.1.21
[INFO] [stderr]   Downloaded archery v0.4.0
[INFO] [stderr]   Downloaded error-code v2.3.0
[INFO] [stderr]   Downloaded str-buf v1.0.5
[INFO] [stderr]   Downloaded dirs-next v2.0.0
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded serde_json v1.0.69
[INFO] [stderr]   Downloaded version-compare v0.1.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec74c77d043a674fa2b404f15765bf64541945a5e904a8bbb126dcfd3d392190
[INFO] running `Command { std: "docker" "start" "-a" "ec74c77d043a674fa2b404f15765bf64541945a5e904a8bbb126dcfd3d392190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec74c77d043a674fa2b404f15765bf64541945a5e904a8bbb126dcfd3d392190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec74c77d043a674fa2b404f15765bf64541945a5e904a8bbb126dcfd3d392190", kill_on_drop: false }`
[INFO] [stdout] ec74c77d043a674fa2b404f15765bf64541945a5e904a8bbb126dcfd3d392190
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab9edc1d303d62d8314f394542c49fecf9db0b2f81ec6e14bea344a5b7576126
[INFO] running `Command { std: "docker" "start" "-a" "ab9edc1d303d62d8314f394542c49fecf9db0b2f81ec6e14bea344a5b7576126", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.69
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking countme v2.0.4
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking archery v0.4.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking rowan v0.12.6
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking cbitset v0.2.0
[INFO] [stderr]     Checking rpds v0.10.0
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking version-compare v0.1.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fd-lock v3.0.0
[INFO] [stderr]     Checking nix v0.22.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking smol_str v0.1.21
[INFO] [stderr]     Checking rnix v0.9.1
[INFO] [stderr]     Checking rustyline v9.0.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking color-eyre v0.5.11
[INFO] [stderr]     Checking nix_evaluator v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "ab9edc1d303d62d8314f394542c49fecf9db0b2f81ec6e14bea344a5b7576126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab9edc1d303d62d8314f394542c49fecf9db0b2f81ec6e14bea344a5b7576126", kill_on_drop: false }`
[INFO] [stdout] ab9edc1d303d62d8314f394542c49fecf9db0b2f81ec6e14bea344a5b7576126