[INFO] fetching crate vngineer-core 1.0.3...
[INFO] checking vngineer-core-1.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate vngineer-core 1.0.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate vngineer-core 1.0.3 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 crates.io crate vngineer-core 1.0.3
[INFO] finished tweaking crates.io crate vngineer-core 1.0.3
[INFO] tweaked toml for crates.io crate vngineer-core 1.0.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 50 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding intuicio-backend-vm v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-core v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-data v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-derive v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-essentials v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-plugins v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding memoffset v0.8.0 (latest: v0.9.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intuicio-backend-vm v0.13.1
[INFO] [stderr]   Downloaded intuicio-derive v0.13.1
[INFO] [stderr]   Downloaded intuicio-core v0.13.1
[INFO] [stderr]   Downloaded intuicio-essentials v0.13.1
[INFO] [stderr]   Downloaded intuicio-data v0.13.1
[INFO] [stderr]   Downloaded intuicio-plugins v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2fb3f5e212a8e1a1462cd176a4ead831e475b2a37a055ef787eadaf385903faa
[INFO] running `Command { std: "docker" "start" "-a" "2fb3f5e212a8e1a1462cd176a4ead831e475b2a37a055ef787eadaf385903faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fb3f5e212a8e1a1462cd176a4ead831e475b2a37a055ef787eadaf385903faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb3f5e212a8e1a1462cd176a4ead831e475b2a37a055ef787eadaf385903faa", kill_on_drop: false }`
[INFO] [stdout] 2fb3f5e212a8e1a1462cd176a4ead831e475b2a37a055ef787eadaf385903faa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 36d0288028d22e8e338608dd544d6710811eb3453739247d9c0395bdc57b7858
[INFO] running `Command { std: "docker" "start" "-a" "36d0288028d22e8e338608dd544d6710811eb3453739247d9c0395bdc57b7858", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling pest v2.7.9
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stderr]    Compiling intuicio-derive v0.13.1
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking typid v1.1.1
[INFO] [stderr]     Checking intuicio-data v0.13.1
[INFO] [stderr]     Checking intuicio-core v0.13.1
[INFO] [stderr]     Checking intuicio-backend-vm v0.13.1
[INFO] [stderr]     Checking intuicio-essentials v0.13.1
[INFO] [stderr]     Checking vngineer-core v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.20s
[INFO] running `Command { std: "docker" "inspect" "36d0288028d22e8e338608dd544d6710811eb3453739247d9c0395bdc57b7858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d0288028d22e8e338608dd544d6710811eb3453739247d9c0395bdc57b7858", kill_on_drop: false }`
[INFO] [stdout] 36d0288028d22e8e338608dd544d6710811eb3453739247d9c0395bdc57b7858
[INFO] checking vngineer-core-1.0.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate vngineer-core 1.0.3 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate vngineer-core 1.0.3 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vngineer-core 1.0.3
[INFO] finished tweaking crates.io crate vngineer-core 1.0.3
[INFO] tweaked toml for crates.io crate vngineer-core 1.0.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 50 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding intuicio-backend-vm v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-core v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-data v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-derive v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-essentials v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-plugins v0.13.1 (latest: v0.31.6)
[INFO] [stderr]       Adding memoffset v0.8.0 (latest: v0.9.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10dbb8b417715766f98566916662c8b0fd930334b9f0236480b686d9d7bc9f4b
[INFO] running `Command { std: "docker" "start" "-a" "10dbb8b417715766f98566916662c8b0fd930334b9f0236480b686d9d7bc9f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10dbb8b417715766f98566916662c8b0fd930334b9f0236480b686d9d7bc9f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10dbb8b417715766f98566916662c8b0fd930334b9f0236480b686d9d7bc9f4b", kill_on_drop: false }`
[INFO] [stdout] 10dbb8b417715766f98566916662c8b0fd930334b9f0236480b686d9d7bc9f4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb393161c4efdd5672981bbd48d7c721beddc2164dfb3278fef164508115cae4
[INFO] running `Command { std: "docker" "start" "-a" "fb393161c4efdd5672981bbd48d7c721beddc2164dfb3278fef164508115cae4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stderr]     Checking pest v2.7.9
[INFO] [stderr]    Compiling intuicio-derive v0.13.1
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking typid v1.1.1
[INFO] [stderr]     Checking intuicio-data v0.13.1
[INFO] [stderr]     Checking intuicio-core v0.13.1
[INFO] [stderr]     Checking intuicio-backend-vm v0.13.1
[INFO] [stderr]     Checking intuicio-essentials v0.13.1
[INFO] [stderr]     Checking vngineer-core v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.45s
[INFO] running `Command { std: "docker" "inspect" "fb393161c4efdd5672981bbd48d7c721beddc2164dfb3278fef164508115cae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb393161c4efdd5672981bbd48d7c721beddc2164dfb3278fef164508115cae4", kill_on_drop: false }`
[INFO] [stdout] fb393161c4efdd5672981bbd48d7c721beddc2164dfb3278fef164508115cae4