[INFO] cloning repository https://github.com/visith1577/rust-futures-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/visith1577/rust-futures-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisith1577%2Frust-futures-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisith1577%2Frust-futures-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 414514540471bc47c824201d1af91d477d335870
[INFO] checking visith1577/rust-futures-test against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisith1577%2Frust-futures-test" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/visith1577/rust-futures-test 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/visith1577/rust-futures-test
[INFO] finished tweaking git repo https://github.com/visith1577/rust-futures-test
[INFO] tweaked toml for git repo https://github.com/visith1577/rust-futures-test written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/visith1577/rust-futures-test 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 async-global-executor v2.4.0
[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] 8f58d7cf255ff8ea1443b6afa45b3b901462c3971c899d2599c359c7a518af4d
[INFO] running `Command { std: "docker" "start" "-a" "8f58d7cf255ff8ea1443b6afa45b3b901462c3971c899d2599c359c7a518af4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f58d7cf255ff8ea1443b6afa45b3b901462c3971c899d2599c359c7a518af4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f58d7cf255ff8ea1443b6afa45b3b901462c3971c899d2599c359c7a518af4d", kill_on_drop: false }`
[INFO] [stdout] 8f58d7cf255ff8ea1443b6afa45b3b901462c3971c899d2599c359c7a518af4d
[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] b292e5cafa596478e06da28b85955c6ef0876e2b91eb8d36c0fa8970bb0ceedb
[INFO] running `Command { std: "docker" "start" "-a" "b292e5cafa596478e06da28b85955c6ef0876e2b91eb8d36c0fa8970bb0ceedb", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]    Compiling rustix v0.38.26
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]     Checking value-bag v1.4.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking async-task v4.5.0
[INFO] [stderr]     Checking futures-lite v2.1.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking event-listener v4.0.0
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking async-lock v3.2.0
[INFO] [stderr]     Checking async-channel v2.1.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking async-executor v1.8.0
[INFO] [stderr]     Checking polling v3.3.1
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking async-io v2.2.1
[INFO] [stderr]     Checking async-global-executor v2.4.0
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking tokio v1.35.0
[INFO] [stderr]     Checking futures-executor v0.3.29
[INFO] [stderr]     Checking futures v0.3.29
[INFO] [stderr]     Checking async-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.51s
[INFO] running `Command { std: "docker" "inspect" "b292e5cafa596478e06da28b85955c6ef0876e2b91eb8d36c0fa8970bb0ceedb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b292e5cafa596478e06da28b85955c6ef0876e2b91eb8d36c0fa8970bb0ceedb", kill_on_drop: false }`
[INFO] [stdout] b292e5cafa596478e06da28b85955c6ef0876e2b91eb8d36c0fa8970bb0ceedb
[INFO] checking visith1577/rust-futures-test against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvisith1577%2Frust-futures-test" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/visith1577/rust-futures-test 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/visith1577/rust-futures-test
[INFO] finished tweaking git repo https://github.com/visith1577/rust-futures-test
[INFO] tweaked toml for git repo https://github.com/visith1577/rust-futures-test written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/visith1577/rust-futures-test 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-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] af0d2651130235cbe8d12a679fc6a446d244c58b985dd73022bea1a4b821ecdd
[INFO] running `Command { std: "docker" "start" "-a" "af0d2651130235cbe8d12a679fc6a446d244c58b985dd73022bea1a4b821ecdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af0d2651130235cbe8d12a679fc6a446d244c58b985dd73022bea1a4b821ecdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af0d2651130235cbe8d12a679fc6a446d244c58b985dd73022bea1a4b821ecdd", kill_on_drop: false }`
[INFO] [stdout] af0d2651130235cbe8d12a679fc6a446d244c58b985dd73022bea1a4b821ecdd
[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] 95935542b69bff86ff933fd5024abe353e1203cc8563ae3a3b2c0956d6bc78a4
[INFO] running `Command { std: "docker" "start" "-a" "95935542b69bff86ff933fd5024abe353e1203cc8563ae3a3b2c0956d6bc78a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling rustix v0.38.26
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]     Checking value-bag v1.4.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking futures-lite v2.1.0
[INFO] [stderr]     Checking async-task v4.5.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking event-listener v4.0.0
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking async-lock v3.2.0
[INFO] [stderr]     Checking async-channel v2.1.1
[INFO] [stderr]     Checking async-executor v1.8.0
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking polling v3.3.1
[INFO] [stderr]     Checking async-io v2.2.1
[INFO] [stderr]     Checking async-global-executor v2.4.0
[INFO] [stderr]     Checking tokio v1.35.0
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking futures-executor v0.3.29
[INFO] [stderr]     Checking futures v0.3.29
[INFO] [stderr]     Checking async-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.34s
[INFO] running `Command { std: "docker" "inspect" "95935542b69bff86ff933fd5024abe353e1203cc8563ae3a3b2c0956d6bc78a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95935542b69bff86ff933fd5024abe353e1203cc8563ae3a3b2c0956d6bc78a4", kill_on_drop: false }`
[INFO] [stdout] 95935542b69bff86ff933fd5024abe353e1203cc8563ae3a3b2c0956d6bc78a4