[INFO] cloning repository https://github.com/spacemeowx2/gugugu [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spacemeowx2/gugugu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspacemeowx2%2Fgugugu", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspacemeowx2%2Fgugugu'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6398163bc667539c618c1fc98e93e5afdf1891cb [INFO] checking spacemeowx2/gugugu against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspacemeowx2%2Fgugugu" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/spacemeowx2/gugugu 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] removed /workspace/builds/worker-6-tc1/source/rust-toolchain [INFO] started tweaking git repo https://github.com/spacemeowx2/gugugu [INFO] finished tweaking git repo https://github.com/spacemeowx2/gugugu [INFO] tweaked toml for git repo https://github.com/spacemeowx2/gugugu written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/spacemeowx2/gugugu 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1fc7b8661f1bdc87448e6cd0e6c368a884f84b43d159d04f36f4d170a3aabd37 [INFO] running `Command { std: "docker" "start" "-a" "1fc7b8661f1bdc87448e6cd0e6c368a884f84b43d159d04f36f4d170a3aabd37", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1fc7b8661f1bdc87448e6cd0e6c368a884f84b43d159d04f36f4d170a3aabd37", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1fc7b8661f1bdc87448e6cd0e6c368a884f84b43d159d04f36f4d170a3aabd37", kill_on_drop: false }` [INFO] [stdout] 1fc7b8661f1bdc87448e6cd0e6c368a884f84b43d159d04f36f4d170a3aabd37 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9c74636eab3adaf13244eabebadfb8aef8457bd16ecd10074c91ba7a06b2b804 [INFO] running `Command { std: "docker" "start" "-a" "9c74636eab3adaf13244eabebadfb8aef8457bd16ecd10074c91ba7a06b2b804", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking cache-padded v1.1.1 [INFO] [stderr] Checking futures-core v0.3.8 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking fastrand v1.4.0 [INFO] [stderr] Checking parking v2.0.0 [INFO] [stderr] Checking concurrent-queue v1.2.2 [INFO] [stderr] Checking futures-io v0.3.8 [INFO] [stderr] Checking pin-project-lite v0.1.11 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Checking once_cell v1.5.2 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Checking vec-arena v1.0.0 [INFO] [stderr] Checking event-listener v2.5.1 [INFO] [stderr] Checking async-task v4.0.3 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling syn v1.0.54 [INFO] [stderr] Checking async-channel v1.5.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking atomic-waker v1.0.0 [INFO] [stderr] Checking async-mutex v1.4.0 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Checking pin-project-lite v0.2.0 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-lite v1.11.2 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking polling v2.0.2 [INFO] [stderr] Checking nb-connect v1.0.2 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking async-io v1.3.1 [INFO] [stderr] Checking async-executor v1.4.0 [INFO] [stderr] Checking blocking v1.0.2 [INFO] [stderr] Checking async-global-executor v1.4.3 [INFO] [stderr] Compiling async-attributes v1.1.1 [INFO] [stderr] Checking async-std v1.8.0 [INFO] [stderr] Checking gugugu v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 10 | / loop { [INFO] [stdout] 11 | | let (n, peer) = socket.recv_from(&mut buf).await?; [INFO] [stdout] 12 | | socket.send_to(&buf[..n], &peer).await?; [INFO] [stdout] 13 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 14 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 10 | / loop { [INFO] [stdout] 11 | | let (n, peer) = socket.recv_from(&mut buf).await?; [INFO] [stdout] 12 | | socket.send_to(&buf[..n], &peer).await?; [INFO] [stdout] 13 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 14 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_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 4.25s [INFO] running `Command { std: "docker" "inspect" "9c74636eab3adaf13244eabebadfb8aef8457bd16ecd10074c91ba7a06b2b804", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9c74636eab3adaf13244eabebadfb8aef8457bd16ecd10074c91ba7a06b2b804", kill_on_drop: false }` [INFO] [stdout] 9c74636eab3adaf13244eabebadfb8aef8457bd16ecd10074c91ba7a06b2b804 [INFO] checking spacemeowx2/gugugu against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspacemeowx2%2Fgugugu" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/spacemeowx2/gugugu 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] removed /workspace/builds/worker-6-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/spacemeowx2/gugugu [INFO] finished tweaking git repo https://github.com/spacemeowx2/gugugu [INFO] tweaked toml for git repo https://github.com/spacemeowx2/gugugu written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/spacemeowx2/gugugu 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c359959b7d6d3b920c279654e7d93d78e786b8863b492cd2c035e9a9f608f865 [INFO] running `Command { std: "docker" "start" "-a" "c359959b7d6d3b920c279654e7d93d78e786b8863b492cd2c035e9a9f608f865", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c359959b7d6d3b920c279654e7d93d78e786b8863b492cd2c035e9a9f608f865", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c359959b7d6d3b920c279654e7d93d78e786b8863b492cd2c035e9a9f608f865", kill_on_drop: false }` [INFO] [stdout] c359959b7d6d3b920c279654e7d93d78e786b8863b492cd2c035e9a9f608f865 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 801a36cf10dcb0c0d5cd251b1f491e1bf15cc73baa167882721a2c9a5f094707 [INFO] running `Command { std: "docker" "start" "-a" "801a36cf10dcb0c0d5cd251b1f491e1bf15cc73baa167882721a2c9a5f094707", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking futures-core v0.3.8 [INFO] [stderr] Checking cache-padded v1.1.1 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking futures-io v0.3.8 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Checking fastrand v1.4.0 [INFO] [stderr] Checking pin-project-lite v0.1.11 [INFO] [stderr] Checking concurrent-queue v1.2.2 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking parking v2.0.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking once_cell v1.5.2 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking event-listener v2.5.1 [INFO] [stderr] Compiling syn v1.0.54 [INFO] [stderr] Checking async-task v4.0.3 [INFO] [stderr] Checking vec-arena v1.0.0 [INFO] [stderr] Checking async-channel v1.5.1 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking atomic-waker v1.0.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Checking async-mutex v1.4.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking pin-project-lite v0.2.0 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-lite v1.11.2 [INFO] [stderr] Checking polling v2.0.2 [INFO] [stderr] Checking nb-connect v1.0.2 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-1.11.2/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::(|_| 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] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "801a36cf10dcb0c0d5cd251b1f491e1bf15cc73baa167882721a2c9a5f094707", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "801a36cf10dcb0c0d5cd251b1f491e1bf15cc73baa167882721a2c9a5f094707", kill_on_drop: false }` [INFO] [stdout] 801a36cf10dcb0c0d5cd251b1f491e1bf15cc73baa167882721a2c9a5f094707