[INFO] fetching crate completion-io 0.2.0... [INFO] checking completion-io-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate completion-io 0.2.0 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate completion-io 0.2.0 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 completion-io 0.2.0 [INFO] finished tweaking crates.io crate completion-io 0.2.0 [INFO] tweaked toml for crates.io crate completion-io 0.2.0 written to /workspace/builds/worker-1-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 v1.13.0 (latest: v2.3.0) [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] Downloading crates ... [INFO] [stderr] Downloaded completion-core v0.2.0 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dcb5d2cba067b48dabd76babf884dfc07df68d3f5ab7bd7678f8d2b12502d235 [INFO] running `Command { std: "docker" "start" "-a" "dcb5d2cba067b48dabd76babf884dfc07df68d3f5ab7bd7678f8d2b12502d235", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dcb5d2cba067b48dabd76babf884dfc07df68d3f5ab7bd7678f8d2b12502d235", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dcb5d2cba067b48dabd76babf884dfc07df68d3f5ab7bd7678f8d2b12502d235", kill_on_drop: false }` [INFO] [stdout] dcb5d2cba067b48dabd76babf884dfc07df68d3f5ab7bd7678f8d2b12502d235 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 829be929dde8e65f4970b0e1f16741aa3ccbf5d02904fb8af0728a733f5f6395 [INFO] running `Command { std: "docker" "start" "-a" "829be929dde8e65f4970b0e1f16741aa3ccbf5d02904fb8af0728a733f5f6395", kill_on_drop: false }` [INFO] [stderr] Checking completion-core v0.2.0 [INFO] [stderr] Checking futures-lite v1.13.0 [INFO] [stderr] Checking completion-io v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary qualification [INFO] [stdout] --> src/read.rs:64:35 [INFO] [stdout] | [INFO] [stdout] 64 | std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | unused_qualifications, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: remove the unnecessary path segments [INFO] [stdout] | [INFO] [stdout] 64 - std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] 64 + std::io::Read::read(self, slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary qualification [INFO] [stdout] --> src/read.rs:64:35 [INFO] [stdout] | [INFO] [stdout] 64 | std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | unused_qualifications, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: remove the unnecessary path segments [INFO] [stdout] | [INFO] [stdout] 64 - std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] 64 + std::io::Read::read(self, slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s [INFO] running `Command { std: "docker" "inspect" "829be929dde8e65f4970b0e1f16741aa3ccbf5d02904fb8af0728a733f5f6395", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "829be929dde8e65f4970b0e1f16741aa3ccbf5d02904fb8af0728a733f5f6395", kill_on_drop: false }` [INFO] [stdout] 829be929dde8e65f4970b0e1f16741aa3ccbf5d02904fb8af0728a733f5f6395 [INFO] checking completion-io-0.2.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate completion-io 0.2.0 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate completion-io 0.2.0 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 completion-io 0.2.0 [INFO] finished tweaking crates.io crate completion-io 0.2.0 [INFO] tweaked toml for crates.io crate completion-io 0.2.0 written to /workspace/builds/worker-1-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-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c8bb215a76cc55bcf79b2635af2a58b91e88dbd6aad7b0b6d215e03c01c02662 [INFO] running `Command { std: "docker" "start" "-a" "c8bb215a76cc55bcf79b2635af2a58b91e88dbd6aad7b0b6d215e03c01c02662", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c8bb215a76cc55bcf79b2635af2a58b91e88dbd6aad7b0b6d215e03c01c02662", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8bb215a76cc55bcf79b2635af2a58b91e88dbd6aad7b0b6d215e03c01c02662", kill_on_drop: false }` [INFO] [stdout] c8bb215a76cc55bcf79b2635af2a58b91e88dbd6aad7b0b6d215e03c01c02662 [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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 11b944ecd7642092df2630cc6d146c7c88d64692f0a6cbd96147b9193158357d [INFO] running `Command { std: "docker" "start" "-a" "11b944ecd7642092df2630cc6d146c7c88d64692f0a6cbd96147b9193158357d", kill_on_drop: false }` [INFO] [stderr] Checking futures-core v0.3.30 [INFO] [stderr] Checking parking v2.2.0 [INFO] [stderr] Checking waker-fn v1.1.1 [INFO] [stderr] Checking fastrand v1.9.0 [INFO] [stderr] Checking completion-core v0.2.0 [INFO] [stderr] Checking completion-io v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures-lite v1.13.0 [INFO] [stdout] warning: unnecessary qualification [INFO] [stdout] --> src/read.rs:64:35 [INFO] [stdout] | [INFO] [stdout] 64 | std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | unused_qualifications, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: remove the unnecessary path segments [INFO] [stdout] | [INFO] [stdout] 64 - std::io::Read::read(self, std::slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] 64 + std::io::Read::read(self, slice::from_mut(&mut byte)).unwrap(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [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::(|_| 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" "11b944ecd7642092df2630cc6d146c7c88d64692f0a6cbd96147b9193158357d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11b944ecd7642092df2630cc6d146c7c88d64692f0a6cbd96147b9193158357d", kill_on_drop: false }` [INFO] [stdout] 11b944ecd7642092df2630cc6d146c7c88d64692f0a6cbd96147b9193158357d