[INFO] fetching crate zero_v 0.2.0...
[INFO] checking zero_v-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate zero_v 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate zero_v 0.2.0 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 zero_v 0.2.0
[INFO] finished tweaking crates.io crate zero_v 0.2.0
[INFO] tweaked toml for crates.io crate zero_v 0.2.0 written to /workspace/builds/worker-6-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 64 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 convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding criterion v0.3.6 (latest: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (latest: v0.5.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[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 zero_v_gen 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] 46c89e519c6f24d9265ad7b438e7c5eabba7260a616640e518633b9becd48722
[INFO] running `Command { std: "docker" "start" "-a" "46c89e519c6f24d9265ad7b438e7c5eabba7260a616640e518633b9becd48722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46c89e519c6f24d9265ad7b438e7c5eabba7260a616640e518633b9becd48722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46c89e519c6f24d9265ad7b438e7c5eabba7260a616640e518633b9becd48722", kill_on_drop: false }`
[INFO] [stdout] 46c89e519c6f24d9265ad7b438e7c5eabba7260a616640e518633b9becd48722
[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] 9b5ae001ad8ea6bb645b9731a9d8a5ec54e7cc893ddd34f39c8bc1d9e4fdd6c3
[INFO] running `Command { std: "docker" "start" "-a" "9b5ae001ad8ea6bb645b9731a9d8a5ec54e7cc893ddd34f39c8bc1d9e4fdd6c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]    Compiling zero_v_gen v0.1.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking zero_v v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "9b5ae001ad8ea6bb645b9731a9d8a5ec54e7cc893ddd34f39c8bc1d9e4fdd6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b5ae001ad8ea6bb645b9731a9d8a5ec54e7cc893ddd34f39c8bc1d9e4fdd6c3", kill_on_drop: false }`
[INFO] [stdout] 9b5ae001ad8ea6bb645b9731a9d8a5ec54e7cc893ddd34f39c8bc1d9e4fdd6c3