[INFO] cloning repository https://github.com/xdyang1986/rusttest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xdyang1986/rusttest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxdyang1986%2Frusttest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxdyang1986%2Frusttest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b79e19d717175171d3b52fe564918ee7dc610722
[INFO] checking xdyang1986/rusttest against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxdyang1986%2Frusttest" "/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/xdyang1986/rusttest 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 git repo https://github.com/xdyang1986/rusttest
[INFO] finished tweaking git repo https://github.com/xdyang1986/rusttest
[INFO] tweaked toml for git repo https://github.com/xdyang1986/rusttest written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xdyang1986/rusttest 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ferris-says v0.3.1
[INFO] [stderr]   Downloaded textwrap v0.13.4
[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] 1f2200505b904dd9072d416f5d4c6bd7a636195a6603bd228a51a8a770beaa64
[INFO] running `Command { std: "docker" "start" "-a" "1f2200505b904dd9072d416f5d4c6bd7a636195a6603bd228a51a8a770beaa64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f2200505b904dd9072d416f5d4c6bd7a636195a6603bd228a51a8a770beaa64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2200505b904dd9072d416f5d4c6bd7a636195a6603bd228a51a8a770beaa64", kill_on_drop: false }`
[INFO] [stdout] 1f2200505b904dd9072d416f5d4c6bd7a636195a6603bd228a51a8a770beaa64
[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] 58462e3e59e3d02cbf16a279700f4d4311be586295a23aeb914eaafc6fdb490d
[INFO] running `Command { std: "docker" "start" "-a" "58462e3e59e3d02cbf16a279700f4d4311be586295a23aeb914eaafc6fdb490d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking ferris-says v0.3.1
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking chrono v0.4.30
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking node-down-detection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/heartbeat_manager.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use chrono;
[INFO] [stdout]   |     ^^^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/heartbeat_manager.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use chrono;
[INFO] [stdout]   |     ^^^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.46s
[INFO] running `Command { std: "docker" "inspect" "58462e3e59e3d02cbf16a279700f4d4311be586295a23aeb914eaafc6fdb490d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58462e3e59e3d02cbf16a279700f4d4311be586295a23aeb914eaafc6fdb490d", kill_on_drop: false }`
[INFO] [stdout] 58462e3e59e3d02cbf16a279700f4d4311be586295a23aeb914eaafc6fdb490d
[INFO] checking xdyang1986/rusttest against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxdyang1986%2Frusttest" "/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/xdyang1986/rusttest 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 git repo https://github.com/xdyang1986/rusttest
[INFO] finished tweaking git repo https://github.com/xdyang1986/rusttest
[INFO] tweaked toml for git repo https://github.com/xdyang1986/rusttest written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xdyang1986/rusttest 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" "+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] b69e3e28f48ba082129bb54fbe3822049fe2368abc4f168290e6dc74a7864774
[INFO] running `Command { std: "docker" "start" "-a" "b69e3e28f48ba082129bb54fbe3822049fe2368abc4f168290e6dc74a7864774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b69e3e28f48ba082129bb54fbe3822049fe2368abc4f168290e6dc74a7864774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69e3e28f48ba082129bb54fbe3822049fe2368abc4f168290e6dc74a7864774", kill_on_drop: false }`
[INFO] [stdout] b69e3e28f48ba082129bb54fbe3822049fe2368abc4f168290e6dc74a7864774
[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] ec051b2b082a08d5e4ccc776d00c8d85fa03692dbc59be60308f21fcb7566d8a
[INFO] running `Command { std: "docker" "start" "-a" "ec051b2b082a08d5e4ccc776d00c8d85fa03692dbc59be60308f21fcb7566d8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking ferris-says v0.3.1
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking chrono v0.4.30
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking node-down-detection v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/heartbeat_manager.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use chrono;
[INFO] [stdout]   |     ^^^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/heartbeat_manager.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use chrono;
[INFO] [stdout]   |     ^^^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.06s
[INFO] running `Command { std: "docker" "inspect" "ec051b2b082a08d5e4ccc776d00c8d85fa03692dbc59be60308f21fcb7566d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec051b2b082a08d5e4ccc776d00c8d85fa03692dbc59be60308f21fcb7566d8a", kill_on_drop: false }`
[INFO] [stdout] ec051b2b082a08d5e4ccc776d00c8d85fa03692dbc59be60308f21fcb7566d8a