[INFO] fetching crate futures-micro 1.0.0-rc0... [INFO] checking futures-micro-1.0.0-rc0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate futures-micro 1.0.0-rc0 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate futures-micro 1.0.0-rc0 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 futures-micro 1.0.0-rc0 [INFO] finished tweaking crates.io crate futures-micro 1.0.0-rc0 [INFO] tweaked toml for crates.io crate futures-micro 1.0.0-rc0 written to /workspace/builds/worker-3-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] Locking 12 packages [INFO] [stderr] Adding fastrand v1.9.0 (latest: v2.0.2) [INFO] [stderr] Adding futures-lite v0.1.11 (latest: v2.3.0) [INFO] [stderr] Adding pin-project-lite v0.1.12 (latest: v0.2.14) [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1bc4c399ab8bf857002d808f42fe6158ab08e5bdb95dacc7204006a83599c06d [INFO] running `Command { std: "docker" "start" "-a" "1bc4c399ab8bf857002d808f42fe6158ab08e5bdb95dacc7204006a83599c06d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1bc4c399ab8bf857002d808f42fe6158ab08e5bdb95dacc7204006a83599c06d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1bc4c399ab8bf857002d808f42fe6158ab08e5bdb95dacc7204006a83599c06d", kill_on_drop: false }` [INFO] [stdout] 1bc4c399ab8bf857002d808f42fe6158ab08e5bdb95dacc7204006a83599c06d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 68ea09aff064583687223908200d4d636c6038d7bfd2592334f40f0e3e3a0bc7 [INFO] running `Command { std: "docker" "start" "-a" "68ea09aff064583687223908200d4d636c6038d7bfd2592334f40f0e3e3a0bc7", kill_on_drop: false }` [INFO] [stderr] Checking fastrand v1.9.0 [INFO] [stderr] Checking parking v2.2.0 [INFO] [stderr] Checking pin-project-lite v0.1.12 [INFO] [stderr] Checking waker-fn v1.1.1 [INFO] [stderr] Checking futures-micro v1.0.0-rc0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures-lite v0.1.11 [INFO] [stdout] warning: the item `poll_fn` is imported redundantly [INFO] [stdout] --> tests/test.rs:5:21 [INFO] [stdout] | [INFO] [stdout] 5 | use futures_micro::{poll_fn, prelude::*}; [INFO] [stdout] | ^^^^^^^ ---------- the item `poll_fn` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Poll` is imported redundantly [INFO] [stdout] --> tests/test.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 5 | use futures_micro::{poll_fn, prelude::*}; [INFO] [stdout] | ---------- the item `Poll` is already imported here [INFO] [stdout] 6 | use std::task::Poll; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s [INFO] running `Command { std: "docker" "inspect" "68ea09aff064583687223908200d4d636c6038d7bfd2592334f40f0e3e3a0bc7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68ea09aff064583687223908200d4d636c6038d7bfd2592334f40f0e3e3a0bc7", kill_on_drop: false }` [INFO] [stdout] 68ea09aff064583687223908200d4d636c6038d7bfd2592334f40f0e3e3a0bc7 [INFO] checking futures-micro-1.0.0-rc0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate futures-micro 1.0.0-rc0 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate futures-micro 1.0.0-rc0 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 futures-micro 1.0.0-rc0 [INFO] finished tweaking crates.io crate futures-micro 1.0.0-rc0 [INFO] tweaked toml for crates.io crate futures-micro 1.0.0-rc0 written to /workspace/builds/worker-3-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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d371e05a581774ac348e2239142a8f7fa67b77343bc1efe42587fb804d20371d [INFO] running `Command { std: "docker" "start" "-a" "d371e05a581774ac348e2239142a8f7fa67b77343bc1efe42587fb804d20371d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d371e05a581774ac348e2239142a8f7fa67b77343bc1efe42587fb804d20371d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d371e05a581774ac348e2239142a8f7fa67b77343bc1efe42587fb804d20371d", kill_on_drop: false }` [INFO] [stdout] d371e05a581774ac348e2239142a8f7fa67b77343bc1efe42587fb804d20371d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] be9bd6d80ec98310a5c2d2497bbe2ef1910adfad83ab69e9bb91575adf3838d9 [INFO] running `Command { std: "docker" "start" "-a" "be9bd6d80ec98310a5c2d2497bbe2ef1910adfad83ab69e9bb91575adf3838d9", kill_on_drop: false }` [INFO] [stderr] Checking parking v2.2.0 [INFO] [stderr] Checking waker-fn v1.1.1 [INFO] [stderr] Checking futures-io v0.3.30 [INFO] [stderr] Checking pin-project-lite v0.1.12 [INFO] [stderr] Checking fastrand v1.9.0 [INFO] [stderr] Checking futures-micro v1.0.0-rc0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures-lite v0.1.11 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-0.1.11/src/future.rs:472:27 [INFO] [stdout] | [INFO] [stdout] 472 | 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] 472 | let t1 = res1.map_err::(|_| unreachable!()).unwrap(); [INFO] [stdout] | ++++++++ [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 `futures-lite` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "be9bd6d80ec98310a5c2d2497bbe2ef1910adfad83ab69e9bb91575adf3838d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "be9bd6d80ec98310a5c2d2497bbe2ef1910adfad83ab69e9bb91575adf3838d9", kill_on_drop: false }` [INFO] [stdout] be9bd6d80ec98310a5c2d2497bbe2ef1910adfad83ab69e9bb91575adf3838d9