[INFO] fetching crate intuicio-frontend-serde 0.23.1...
[INFO] checking intuicio-frontend-serde-0.23.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate intuicio-frontend-serde 0.23.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate intuicio-frontend-serde 0.23.1 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 intuicio-frontend-serde 0.23.1
[INFO] finished tweaking crates.io crate intuicio-frontend-serde 0.23.1
[INFO] tweaked toml for crates.io crate intuicio-frontend-serde 0.23.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 66 packages
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (latest: v0.8.0)
[INFO] [stderr]       Adding intuicio-backend-vm v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-core v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-data v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-nodes v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding rstar v0.10.0 (latest: v0.12.0)
[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 typid v1.1.1
[INFO] [stderr]   Downloaded lexpr-macros v0.2.2
[INFO] [stderr]   Downloaded serde-lexpr v0.1.3
[INFO] [stderr]   Downloaded serde-intermediate-derive v1.6.0
[INFO] [stderr]   Downloaded rstar v0.10.0
[INFO] [stderr]   Downloaded intuicio-backend-vm v0.23.1
[INFO] [stderr]   Downloaded lexpr v0.2.7
[INFO] [stderr]   Downloaded atomic-polyfill v1.0.3
[INFO] [stderr]   Downloaded intuicio-data v0.23.1
[INFO] [stderr]   Downloaded intuicio-core v0.23.1
[INFO] [stderr]   Downloaded heapless v0.7.17
[INFO] [stderr]   Downloaded serde-intermediate v1.6.0
[INFO] [stderr]   Downloaded intuicio-nodes v0.23.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1105c8421b0a9eb3d420e58c60cd445188a2d78b2b8de6344896585ed54ada53
[INFO] running `Command { std: "docker" "start" "-a" "1105c8421b0a9eb3d420e58c60cd445188a2d78b2b8de6344896585ed54ada53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1105c8421b0a9eb3d420e58c60cd445188a2d78b2b8de6344896585ed54ada53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1105c8421b0a9eb3d420e58c60cd445188a2d78b2b8de6344896585ed54ada53", kill_on_drop: false }`
[INFO] [stdout] 1105c8421b0a9eb3d420e58c60cd445188a2d78b2b8de6344896585ed54ada53
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aba6d252d39f8d1ebe2a8bf3461afb8dc7cf8609d3365c2fe56ecdc0760724f2
[INFO] running `Command { std: "docker" "start" "-a" "aba6d252d39f8d1ebe2a8bf3461afb8dc7cf8609d3365c2fe56ecdc0760724f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking pest v2.7.9
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]    Compiling serde-intermediate-derive v1.6.0
[INFO] [stderr]    Compiling lexpr-macros v0.2.2
[INFO] [stderr]     Checking lexpr v0.2.7
[INFO] [stderr]     Checking rstar v0.10.0
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde-lexpr v0.1.3
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]     Checking typid v1.1.1
[INFO] [stderr]     Checking intuicio-data v0.23.1
[INFO] [stderr]     Checking serde-intermediate v1.6.0
[INFO] [stderr]     Checking intuicio-core v0.23.1
[INFO] [stderr]     Checking intuicio-backend-vm v0.23.1
[INFO] [stderr]     Checking intuicio-nodes v0.23.1
[INFO] [stderr]     Checking intuicio-frontend-serde v0.23.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.53s
[INFO] running `Command { std: "docker" "inspect" "aba6d252d39f8d1ebe2a8bf3461afb8dc7cf8609d3365c2fe56ecdc0760724f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aba6d252d39f8d1ebe2a8bf3461afb8dc7cf8609d3365c2fe56ecdc0760724f2", kill_on_drop: false }`
[INFO] [stdout] aba6d252d39f8d1ebe2a8bf3461afb8dc7cf8609d3365c2fe56ecdc0760724f2
[INFO] checking intuicio-frontend-serde-0.23.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate intuicio-frontend-serde 0.23.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate intuicio-frontend-serde 0.23.1 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 intuicio-frontend-serde 0.23.1
[INFO] finished tweaking crates.io crate intuicio-frontend-serde 0.23.1
[INFO] tweaked toml for crates.io crate intuicio-frontend-serde 0.23.1 written to /workspace/builds/worker-5-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 66 packages
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (latest: v0.8.0)
[INFO] [stderr]       Adding intuicio-backend-vm v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-core v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-data v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding intuicio-nodes v0.23.1 (latest: v0.31.6)
[INFO] [stderr]       Adding rstar v0.10.0 (latest: v0.12.0)
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] be701c8dd93069394c1151c8f25e3944a8c5621918b4e08eb3c5769152f89214
[INFO] running `Command { std: "docker" "start" "-a" "be701c8dd93069394c1151c8f25e3944a8c5621918b4e08eb3c5769152f89214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be701c8dd93069394c1151c8f25e3944a8c5621918b4e08eb3c5769152f89214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be701c8dd93069394c1151c8f25e3944a8c5621918b4e08eb3c5769152f89214", kill_on_drop: false }`
[INFO] [stdout] be701c8dd93069394c1151c8f25e3944a8c5621918b4e08eb3c5769152f89214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 995c586f79be47d88d9a574c51194b046d581cacc182bfc981d5996d4d3b2f97
[INFO] running `Command { std: "docker" "start" "-a" "995c586f79be47d88d9a574c51194b046d581cacc182bfc981d5996d4d3b2f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking pest v2.7.9
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]    Compiling serde-intermediate-derive v1.6.0
[INFO] [stderr]    Compiling lexpr-macros v0.2.2
[INFO] [stderr]     Checking lexpr v0.2.7
[INFO] [stderr]     Checking rstar v0.10.0
[INFO] [stderr]    Compiling pest_meta v2.7.9
[INFO] [stderr]    Compiling pest_generator v2.7.9
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde-lexpr v0.1.3
[INFO] [stderr]    Compiling pest_derive v2.7.9
[INFO] [stderr]     Checking typid v1.1.1
[INFO] [stderr]     Checking intuicio-data v0.23.1
[INFO] [stderr]     Checking serde-intermediate v1.6.0
[INFO] [stderr]     Checking intuicio-core v0.23.1
[INFO] [stderr]     Checking intuicio-backend-vm v0.23.1
[INFO] [stderr]     Checking intuicio-nodes v0.23.1
[INFO] [stderr]     Checking intuicio-frontend-serde v0.23.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.03s
[INFO] running `Command { std: "docker" "inspect" "995c586f79be47d88d9a574c51194b046d581cacc182bfc981d5996d4d3b2f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995c586f79be47d88d9a574c51194b046d581cacc182bfc981d5996d4d3b2f97", kill_on_drop: false }`
[INFO] [stdout] 995c586f79be47d88d9a574c51194b046d581cacc182bfc981d5996d4d3b2f97