[INFO] fetching crate simple_optimization 0.12.1... [INFO] checking simple_optimization-0.12.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate simple_optimization 0.12.1 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate simple_optimization 0.12.1 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 simple_optimization 0.12.1 [INFO] finished tweaking crates.io crate simple_optimization 0.12.1 [INFO] tweaked toml for crates.io crate simple_optimization 0.12.1 written to /workspace/builds/worker-7-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] Locking 78 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 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 textwrap v0.11.0 (latest: v0.16.1) [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] Downloading crates ... [INFO] [stderr] Downloaded print_duration v1.0.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 973b52b008173a2273c00d586fd70e366364b2004324c1ad331d390a15c0e7ed [INFO] running `Command { std: "docker" "start" "-a" "973b52b008173a2273c00d586fd70e366364b2004324c1ad331d390a15c0e7ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "973b52b008173a2273c00d586fd70e366364b2004324c1ad331d390a15c0e7ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "973b52b008173a2273c00d586fd70e366364b2004324c1ad331d390a15c0e7ed", kill_on_drop: false }` [INFO] [stdout] 973b52b008173a2273c00d586fd70e366364b2004324c1ad331d390a15c0e7ed [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9b09aa6ce59bd82751899af91bc3be575171ec3c622ab7c237d919ae966c982f [INFO] running `Command { std: "docker" "start" "-a" "9b09aa6ce59bd82751899af91bc3be575171ec3c622ab7c237d919ae966c982f", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling libm v0.2.8 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking either v1.10.0 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking plotters-backend v0.3.5 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking half v1.8.3 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking plotters-svg v0.3.5 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking print_duration v1.0.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling num-bigint v0.4.4 [INFO] [stderr] Compiling num-rational v0.4.1 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking crossbeam-deque v0.8.5 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking criterion-plot v0.4.5 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking plotters v0.3.5 [INFO] [stderr] Checking rand_distr v0.4.3 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking serde_cbor v0.11.2 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking num v0.4.1 [INFO] [stderr] Checking simple_optimization v0.12.1 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking criterion v0.3.6 [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.40s [INFO] running `Command { std: "docker" "inspect" "9b09aa6ce59bd82751899af91bc3be575171ec3c622ab7c237d919ae966c982f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b09aa6ce59bd82751899af91bc3be575171ec3c622ab7c237d919ae966c982f", kill_on_drop: false }` [INFO] [stdout] 9b09aa6ce59bd82751899af91bc3be575171ec3c622ab7c237d919ae966c982f [INFO] checking simple_optimization-0.12.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate simple_optimization 0.12.1 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate simple_optimization 0.12.1 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 simple_optimization 0.12.1 [INFO] finished tweaking crates.io crate simple_optimization 0.12.1 [INFO] tweaked toml for crates.io crate simple_optimization 0.12.1 written to /workspace/builds/worker-7-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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 78 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 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 textwrap v0.11.0 (latest: v0.16.1) [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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ccab34c559fe42d23d5054b16b8767e195a927edf43cfa458f617bffd1e4e8ba [INFO] running `Command { std: "docker" "start" "-a" "ccab34c559fe42d23d5054b16b8767e195a927edf43cfa458f617bffd1e4e8ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ccab34c559fe42d23d5054b16b8767e195a927edf43cfa458f617bffd1e4e8ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ccab34c559fe42d23d5054b16b8767e195a927edf43cfa458f617bffd1e4e8ba", kill_on_drop: false }` [INFO] [stdout] ccab34c559fe42d23d5054b16b8767e195a927edf43cfa458f617bffd1e4e8ba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 12062cb99fd32640790b61aa9c2ca98d3ebe649ce97dfa32fd465f65924aa9fa [INFO] running `Command { std: "docker" "start" "-a" "12062cb99fd32640790b61aa9c2ca98d3ebe649ce97dfa32fd465f65924aa9fa", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling libm v0.2.8 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking either v1.10.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking itoa v1.0.11 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Compiling rayon-core v1.12.1 [INFO] [stderr] Checking plotters-backend v0.3.5 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking half v1.8.3 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking plotters-svg v0.3.5 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking print_duration v1.0.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling num-bigint v0.4.4 [INFO] [stderr] Compiling num-rational v0.4.1 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Checking crossbeam-deque v0.8.5 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking criterion-plot v0.4.5 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking plotters v0.3.5 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Checking rand_distr v0.4.3 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking serde_cbor v0.11.2 [INFO] [stderr] Checking num v0.4.1 [INFO] [stderr] Checking simple_optimization v0.12.1 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking criterion v0.3.6 [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.81s [INFO] running `Command { std: "docker" "inspect" "12062cb99fd32640790b61aa9c2ca98d3ebe649ce97dfa32fd465f65924aa9fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12062cb99fd32640790b61aa9c2ca98d3ebe649ce97dfa32fd465f65924aa9fa", kill_on_drop: false }` [INFO] [stdout] 12062cb99fd32640790b61aa9c2ca98d3ebe649ce97dfa32fd465f65924aa9fa