[INFO] fetching crate mine_sweeper 0.2.2... [INFO] checking mine_sweeper-0.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate mine_sweeper 0.2.2 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate mine_sweeper 0.2.2 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 mine_sweeper 0.2.2 [INFO] finished tweaking crates.io crate mine_sweeper 0.2.2 [INFO] tweaked toml for crates.io crate mine_sweeper 0.2.2 written to /workspace/builds/worker-4-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 88 packages [INFO] [stderr] Adding array-macro v1.0.5 (latest: v2.1.8) [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding crossbeam-channel v0.3.9 (latest: v0.5.12) [INFO] [stderr] Adding crossbeam-utils v0.6.6 (latest: v0.8.19) [INFO] [stderr] Adding cursive v0.11.2 (latest: v0.20.0) [INFO] [stderr] Adding enum-map v0.5.0 (latest: v2.7.3) [INFO] [stderr] Adding enum-map-derive v0.4.6 (latest: v0.17.0) [INFO] [stderr] Adding enum-map-internals v0.1.2 (latest: v0.2.2) [INFO] [stderr] Adding enumset v0.3.19 (latest: v1.1.3) [INFO] [stderr] Adding enumset_derive v0.3.2 (latest: v0.8.1) [INFO] [stderr] Adding hashbrown v0.2.2 (latest: v0.14.3) [INFO] [stderr] Adding ncurses v5.101.0 (latest: v6.0.0) [INFO] [stderr] Adding num v0.2.1 (latest: v0.4.1) [INFO] [stderr] Adding num-complex v0.2.4 (latest: v0.4.5) [INFO] [stderr] Adding num-rational v0.2.4 (latest: v0.4.1) [INFO] [stderr] Adding proc-macro2 v0.4.30 (latest: v1.0.79) [INFO] [stderr] Adding quote v0.6.13 (latest: v1.0.35) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (latest: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (latest: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (latest: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding signal-hook v0.1.17 (latest: v0.3.17) [INFO] [stderr] Adding syn v0.15.44 (latest: v2.0.58) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding toml v0.5.11 (latest: v0.8.12) [INFO] [stderr] Adding unicode-xid v0.1.0 (latest: v0.2.4) [INFO] [stderr] Adding windows-core v0.52.0 (latest: v0.55.0) [INFO] [stderr] Adding xi-unicode v0.1.0 (latest: v0.3.0) [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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ncurses v5.101.0 [INFO] [stderr] Downloaded num v0.2.1 [INFO] [stderr] Downloaded signal-hook v0.1.17 [INFO] [stderr] Downloaded enum-map-derive v0.4.6 [INFO] [stderr] Downloaded enum-map-internals v0.1.2 [INFO] [stderr] Downloaded xi-unicode v0.1.0 [INFO] [stderr] Downloaded array-macro v1.0.5 [INFO] [stderr] Downloaded cursive v0.11.2 [INFO] [stderr] Downloaded hashbrown v0.2.2 [INFO] [stderr] Downloaded enumset_derive v0.3.2 [INFO] [stderr] Downloaded enumset v0.3.19 [INFO] [stderr] Downloaded enum-map v0.5.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c7d9fc74d73b03290d207a4e888f15ddfaf68bd09fc488c7734603b97c98312f [INFO] running `Command { std: "docker" "start" "-a" "c7d9fc74d73b03290d207a4e888f15ddfaf68bd09fc488c7734603b97c98312f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c7d9fc74d73b03290d207a4e888f15ddfaf68bd09fc488c7734603b97c98312f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7d9fc74d73b03290d207a4e888f15ddfaf68bd09fc488c7734603b97c98312f", kill_on_drop: false }` [INFO] [stdout] c7d9fc74d73b03290d207a4e888f15ddfaf68bd09fc488c7734603b97c98312f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 744a800485ea7e2822b833f9405fce7d6f76ddb02ad948e4d55b304872993e88 [INFO] running `Command { std: "docker" "start" "-a" "744a800485ea7e2822b833f9405fce7d6f76ddb02ad948e4d55b304872993e88", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling ncurses v5.101.0 [INFO] [stderr] Checking array-macro v1.0.5 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Checking term_size v0.3.2 [INFO] [stderr] Checking maplit v1.0.2 [INFO] [stderr] Checking xi-unicode v0.1.0 [INFO] [stderr] Checking enum-map-internals v0.1.2 [INFO] [stderr] Checking hashbrown v0.2.2 [INFO] [stderr] Checking unicode-segmentation v1.11.0 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking signal-hook v0.1.17 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Compiling enum-map-derive v0.4.6 [INFO] [stderr] Checking num v0.2.1 [INFO] [stderr] Checking enum-map v0.5.0 [INFO] [stderr] Compiling enumset_derive v0.3.2 [INFO] [stderr] Checking enumset v0.3.19 [INFO] [stderr] Checking cursive v0.11.2 [INFO] [stderr] Checking mine_sweeper v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.37s [INFO] running `Command { std: "docker" "inspect" "744a800485ea7e2822b833f9405fce7d6f76ddb02ad948e4d55b304872993e88", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "744a800485ea7e2822b833f9405fce7d6f76ddb02ad948e4d55b304872993e88", kill_on_drop: false }` [INFO] [stdout] 744a800485ea7e2822b833f9405fce7d6f76ddb02ad948e4d55b304872993e88 [INFO] checking mine_sweeper-0.2.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate mine_sweeper 0.2.2 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate mine_sweeper 0.2.2 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 mine_sweeper 0.2.2 [INFO] finished tweaking crates.io crate mine_sweeper 0.2.2 [INFO] tweaked toml for crates.io crate mine_sweeper 0.2.2 written to /workspace/builds/worker-4-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 88 packages [INFO] [stderr] Adding array-macro v1.0.5 (latest: v2.1.8) [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding crossbeam-channel v0.3.9 (latest: v0.5.12) [INFO] [stderr] Adding crossbeam-utils v0.6.6 (latest: v0.8.19) [INFO] [stderr] Adding cursive v0.11.2 (latest: v0.20.0) [INFO] [stderr] Adding enum-map v0.5.0 (latest: v2.7.3) [INFO] [stderr] Adding enum-map-derive v0.4.6 (latest: v0.17.0) [INFO] [stderr] Adding enum-map-internals v0.1.2 (latest: v0.2.2) [INFO] [stderr] Adding enumset v0.3.19 (latest: v1.1.3) [INFO] [stderr] Adding enumset_derive v0.3.2 (latest: v0.8.1) [INFO] [stderr] Adding hashbrown v0.2.2 (latest: v0.14.3) [INFO] [stderr] Adding ncurses v5.101.0 (latest: v6.0.0) [INFO] [stderr] Adding num v0.2.1 (latest: v0.4.1) [INFO] [stderr] Adding num-complex v0.2.4 (latest: v0.4.5) [INFO] [stderr] Adding num-rational v0.2.4 (latest: v0.4.1) [INFO] [stderr] Adding proc-macro2 v0.4.30 (latest: v1.0.79) [INFO] [stderr] Adding quote v0.6.13 (latest: v1.0.35) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (latest: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (latest: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (latest: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding signal-hook v0.1.17 (latest: v0.3.17) [INFO] [stderr] Adding syn v0.15.44 (latest: v2.0.58) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding toml v0.5.11 (latest: v0.8.12) [INFO] [stderr] Adding unicode-xid v0.1.0 (latest: v0.2.4) [INFO] [stderr] Adding windows-core v0.52.0 (latest: v0.55.0) [INFO] [stderr] Adding xi-unicode v0.1.0 (latest: v0.3.0) [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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ae863316cf9167e34d431e04644082a5889b2c0a193d533943e2982c49a200cc [INFO] running `Command { std: "docker" "start" "-a" "ae863316cf9167e34d431e04644082a5889b2c0a193d533943e2982c49a200cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ae863316cf9167e34d431e04644082a5889b2c0a193d533943e2982c49a200cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae863316cf9167e34d431e04644082a5889b2c0a193d533943e2982c49a200cc", kill_on_drop: false }` [INFO] [stdout] ae863316cf9167e34d431e04644082a5889b2c0a193d533943e2982c49a200cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bba07b32524532e1b18a926a784eb4fce8d5709cc9d0290f87ef590c9657e113 [INFO] running `Command { std: "docker" "start" "-a" "bba07b32524532e1b18a926a784eb4fce8d5709cc9d0290f87ef590c9657e113", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling ncurses v5.101.0 [INFO] [stderr] Checking array-macro v1.0.5 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Checking term_size v0.3.2 [INFO] [stderr] Checking maplit v1.0.2 [INFO] [stderr] Checking unicode-segmentation v1.11.0 [INFO] [stderr] Checking xi-unicode v0.1.0 [INFO] [stderr] Checking enum-map-internals v0.1.2 [INFO] [stderr] Checking hashbrown v0.2.2 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking signal-hook v0.1.17 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Checking num v0.2.1 [INFO] [stderr] Compiling enum-map-derive v0.4.6 [INFO] [stderr] Compiling enumset_derive v0.3.2 [INFO] [stderr] Checking enum-map v0.5.0 [INFO] [stderr] Checking enumset v0.3.19 [INFO] [stderr] Checking cursive v0.11.2 [INFO] [stderr] Checking mine_sweeper v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.33s [INFO] running `Command { std: "docker" "inspect" "bba07b32524532e1b18a926a784eb4fce8d5709cc9d0290f87ef590c9657e113", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bba07b32524532e1b18a926a784eb4fce8d5709cc9d0290f87ef590c9657e113", kill_on_drop: false }` [INFO] [stdout] bba07b32524532e1b18a926a784eb4fce8d5709cc9d0290f87ef590c9657e113