[INFO] fetching crate pop-launcher 1.1.0...
[INFO] checking pop-launcher-1.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate pop-launcher 1.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate pop-launcher 1.1.0 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 crates.io crate pop-launcher 1.1.0
[INFO] finished tweaking crates.io crate pop-launcher 1.1.0
[INFO] tweaked toml for crates.io crate pop-launcher 1.1.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 48 packages
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.13.4 (latest: v0.20.8)
[INFO] [stderr]       Adding event-listener v4.0.3 (latest: v5.2.0)
[INFO] [stderr]       Adding event-listener-strategy v0.4.0 (latest: v0.5.1)
[INFO] [stderr]       Adding fastrand v1.9.0 (latest: v2.0.2)
[INFO] [stderr]       Adding futures-lite v1.13.0 (latest: v2.3.0)
[INFO] [stderr]       Adding serde_with v1.14.0 (latest: v3.7.0)
[INFO] [stderr]       Adding serde_with_macros v1.5.2 (latest: v3.7.0)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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]     Blocking waiting for file lock on package cache
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62c97d66d230d1ab9f95a93b0c236a3a90888ba7524c1ea6ad88b737a76f098c
[INFO] running `Command { std: "docker" "start" "-a" "62c97d66d230d1ab9f95a93b0c236a3a90888ba7524c1ea6ad88b737a76f098c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62c97d66d230d1ab9f95a93b0c236a3a90888ba7524c1ea6ad88b737a76f098c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c97d66d230d1ab9f95a93b0c236a3a90888ba7524c1ea6ad88b737a76f098c", kill_on_drop: false }`
[INFO] [stdout] 62c97d66d230d1ab9f95a93b0c236a3a90888ba7524c1ea6ad88b737a76f098c
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] daf496df9aaf6c596ddac4a1d609558efca012c06bcbea22a5b545f7a0ac103e
[INFO] running `Command { std: "docker" "start" "-a" "daf496df9aaf6c596ddac4a1d609558efca012c06bcbea22a5b545f7a0ac103e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking async-task v4.7.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.32
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking event-listener v5.2.0
[INFO] [stderr]     Checking const_format v0.2.32
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking event-listener-strategy v0.5.1
[INFO] [stderr]     Checking async-lock v3.3.0
[INFO] [stderr]     Checking async-channel v2.2.0
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking pop-launcher v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.93s
[INFO] running `Command { std: "docker" "inspect" "daf496df9aaf6c596ddac4a1d609558efca012c06bcbea22a5b545f7a0ac103e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daf496df9aaf6c596ddac4a1d609558efca012c06bcbea22a5b545f7a0ac103e", kill_on_drop: false }`
[INFO] [stdout] daf496df9aaf6c596ddac4a1d609558efca012c06bcbea22a5b545f7a0ac103e
[INFO] checking pop-launcher-1.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate pop-launcher 1.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate pop-launcher 1.1.0 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 crates.io crate pop-launcher 1.1.0
[INFO] finished tweaking crates.io crate pop-launcher 1.1.0
[INFO] tweaked toml for crates.io crate pop-launcher 1.1.0 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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] 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 757f378f6d28bc0ff529d3c09463ece6b19361979e0b8d8679fc69590a2222c8
[INFO] running `Command { std: "docker" "start" "-a" "757f378f6d28bc0ff529d3c09463ece6b19361979e0b8d8679fc69590a2222c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "757f378f6d28bc0ff529d3c09463ece6b19361979e0b8d8679fc69590a2222c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "757f378f6d28bc0ff529d3c09463ece6b19361979e0b8d8679fc69590a2222c8", kill_on_drop: false }`
[INFO] [stdout] 757f378f6d28bc0ff529d3c09463ece6b19361979e0b8d8679fc69590a2222c8
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6203191f2474f8ddc3c4c39a96ef2f8d6a37af07716b64962438a40a84722b1e
[INFO] running `Command { std: "docker" "start" "-a" "6203191f2474f8ddc3c4c39a96ef2f8d6a37af07716b64962438a40a84722b1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.32
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking async-task v4.7.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-1.13.0/src/future.rs:469:27
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err(|_| unreachable!()).unwrap();
[INFO] [stdout]     |                           ^^^^^^^ cannot infer type of the type parameter `F` declared on the method `map_err`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err::<F, _>(|_| unreachable!()).unwrap();
[INFO] [stdout]     |                                  ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking event-listener v5.2.0
[INFO] [stderr]     Checking event-listener v4.0.3
[INFO] [stderr]     Checking const_format v0.2.32
[INFO] [stderr]     Checking event-listener-strategy v0.5.1
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[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 `futures-lite` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6203191f2474f8ddc3c4c39a96ef2f8d6a37af07716b64962438a40a84722b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6203191f2474f8ddc3c4c39a96ef2f8d6a37af07716b64962438a40a84722b1e", kill_on_drop: false }`
[INFO] [stdout] 6203191f2474f8ddc3c4c39a96ef2f8d6a37af07716b64962438a40a84722b1e