[INFO] cloning repository https://github.com/unrealhoang/memds
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unrealhoang/memds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Fmemds", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Fmemds'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c822d737a3a632513094326310f2239a21469e6
[INFO] checking unrealhoang/memds against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Fmemds" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unrealhoang/memds 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 git repo https://github.com/unrealhoang/memds
[INFO] finished tweaking git repo https://github.com/unrealhoang/memds
[INFO] tweaked toml for git repo https://github.com/unrealhoang/memds written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/unrealhoang/memds already has a lockfile, it will not be regenerated
[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] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.8
[INFO] [stderr]   Downloaded critical-section v0.2.7
[INFO] [stderr]   Downloaded riscv v0.7.0
[INFO] [stderr]   Downloaded cortex-m v0.7.4
[INFO] [stderr]   Downloaded const-field-offset-macro v0.1.2
[INFO] [stderr]   Downloaded const-field-offset v0.1.2
[INFO] [stderr]   Downloaded deseresp v0.1.5
[INFO] [stderr]   Downloaded vtable v0.1.7
[INFO] [stderr]   Downloaded vtable-macro v0.1.7
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73e72fb80ef89b70d57b9a08050601944a0c115619b77af9505d566b8ed2ba5f
[INFO] running `Command { std: "docker" "start" "-a" "73e72fb80ef89b70d57b9a08050601944a0c115619b77af9505d566b8ed2ba5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73e72fb80ef89b70d57b9a08050601944a0c115619b77af9505d566b8ed2ba5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e72fb80ef89b70d57b9a08050601944a0c115619b77af9505d566b8ed2ba5f", kill_on_drop: false }`
[INFO] [stdout] 73e72fb80ef89b70d57b9a08050601944a0c115619b77af9505d566b8ed2ba5f
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d754c3f51eb6e07be935d06aede585a96320c1027eb08264b9a0f8bbc86a281
[INFO] running `Command { std: "docker" "start" "-a" "8d754c3f51eb6e07be935d06aede585a96320c1027eb08264b9a0f8bbc86a281", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling critical-section v0.2.7
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling atomic-polyfill v0.1.8
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking command-args v0.1.0 (/opt/rustwide/workdir/command-args)
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking num-iter v0.1.43
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]    Compiling field-offset v0.3.4
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking command-args-derive v0.1.0 (/opt/rustwide/workdir/command-args-derive)
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling const-field-offset-macro v0.1.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling vtable-macro v0.1.7
[INFO] [stderr]     Checking const-field-offset v0.1.2
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking vtable v0.1.7
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking deseresp v0.1.5
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking memds v0.1.0 (/opt/rustwide/workdir/memds)
[INFO] [stdout] warning: struct `WalEntry` is never constructed
[INFO] [stdout]  --> memds/src/wal/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct WalEntry {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WalEntry` is never constructed
[INFO] [stdout]  --> memds/src/wal/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct WalEntry {}
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.19s
[INFO] running `Command { std: "docker" "inspect" "8d754c3f51eb6e07be935d06aede585a96320c1027eb08264b9a0f8bbc86a281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d754c3f51eb6e07be935d06aede585a96320c1027eb08264b9a0f8bbc86a281", kill_on_drop: false }`
[INFO] [stdout] 8d754c3f51eb6e07be935d06aede585a96320c1027eb08264b9a0f8bbc86a281
[INFO] checking unrealhoang/memds against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funrealhoang%2Fmemds" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unrealhoang/memds on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unrealhoang/memds
[INFO] finished tweaking git repo https://github.com/unrealhoang/memds
[INFO] tweaked toml for git repo https://github.com/unrealhoang/memds written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/unrealhoang/memds already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c07f128ae694d1306698e8a4a72091b7b5d611da9a9ab53c904687b89c70183
[INFO] running `Command { std: "docker" "start" "-a" "5c07f128ae694d1306698e8a4a72091b7b5d611da9a9ab53c904687b89c70183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c07f128ae694d1306698e8a4a72091b7b5d611da9a9ab53c904687b89c70183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c07f128ae694d1306698e8a4a72091b7b5d611da9a9ab53c904687b89c70183", kill_on_drop: false }`
[INFO] [stdout] 5c07f128ae694d1306698e8a4a72091b7b5d611da9a9ab53c904687b89c70183
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2af4d95cd6513833b6f1c4001356127da071951f12fd0e332002aab5cb72c620
[INFO] running `Command { std: "docker" "start" "-a" "2af4d95cd6513833b6f1c4001356127da071951f12fd0e332002aab5cb72c620", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling critical-section v0.2.7
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]    Compiling atomic-polyfill v0.1.8
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking command-args v0.1.0 (/opt/rustwide/workdir/command-args)
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling field-offset v0.3.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/signal-hook-registry-1.4.0/src/half_lock.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             unsafe { libc::abort() };
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `signal-hook-registry` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2af4d95cd6513833b6f1c4001356127da071951f12fd0e332002aab5cb72c620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af4d95cd6513833b6f1c4001356127da071951f12fd0e332002aab5cb72c620", kill_on_drop: false }`
[INFO] [stdout] 2af4d95cd6513833b6f1c4001356127da071951f12fd0e332002aab5cb72c620