[INFO] fetching crate slim-futures 0.1.0-alpha.0... [INFO] checking slim-futures-0.1.0-alpha.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate slim-futures 0.1.0-alpha.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate slim-futures 0.1.0-alpha.0 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] removed /workspace/builds/worker-4-tc1/source/rust-toolchain [INFO] started tweaking crates.io crate slim-futures 0.1.0-alpha.0 [INFO] finished tweaking crates.io crate slim-futures 0.1.0-alpha.0 [INFO] tweaked toml for crates.io crate slim-futures 0.1.0-alpha.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 89 packages [INFO] [stderr] Adding anes v0.1.6 (latest: v0.2.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding clap v3.2.25 (latest: v4.5.4) [INFO] [stderr] Adding clap_lex v0.2.4 (latest: v0.7.0) [INFO] [stderr] Adding criterion v0.4.0 (latest: v0.5.1) [INFO] [stderr] Adding hashbrown v0.12.3 (latest: v0.14.3) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding indexmap v1.9.3 (latest: v2.2.6) [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.12.1) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding os_str_bytes v6.6.1 (latest: v7.0.0) [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] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded fn-traits v0.1.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2fb63791f493cc8c491f15a57d22755dce5dbc6b40823d6371186175b0494570 [INFO] running `Command { std: "docker" "start" "-a" "2fb63791f493cc8c491f15a57d22755dce5dbc6b40823d6371186175b0494570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2fb63791f493cc8c491f15a57d22755dce5dbc6b40823d6371186175b0494570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2fb63791f493cc8c491f15a57d22755dce5dbc6b40823d6371186175b0494570", kill_on_drop: false }` [INFO] [stdout] 2fb63791f493cc8c491f15a57d22755dce5dbc6b40823d6371186175b0494570 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b7a3b175f6a8fa695d991a22e93c85b5b2e23cc2b91456f692971684f2d277a0 [INFO] running `Command { std: "docker" "start" "-a" "b7a3b175f6a8fa695d991a22e93c85b5b2e23cc2b91456f692971684f2d277a0", kill_on_drop: false }` [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking fn-traits v0.1.2 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Checking tokio v1.37.0 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking serde v1.0.197 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking slim-futures v0.1.0-alpha.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures v0.3.30 [INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code` [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FlattenFn` is never constructed [INFO] [stdout] --> src/async_iter/flatten.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct FlattenFn { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code` [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FlattenFn` is never constructed [INFO] [stdout] --> src/async_iter/flatten.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct FlattenFn { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [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 15.44s [INFO] running `Command { std: "docker" "inspect" "b7a3b175f6a8fa695d991a22e93c85b5b2e23cc2b91456f692971684f2d277a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b7a3b175f6a8fa695d991a22e93c85b5b2e23cc2b91456f692971684f2d277a0", kill_on_drop: false }` [INFO] [stdout] b7a3b175f6a8fa695d991a22e93c85b5b2e23cc2b91456f692971684f2d277a0 [INFO] checking slim-futures-0.1.0-alpha.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate slim-futures 0.1.0-alpha.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate slim-futures 0.1.0-alpha.0 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] removed /workspace/builds/worker-4-tc2/source/rust-toolchain [INFO] started tweaking crates.io crate slim-futures 0.1.0-alpha.0 [INFO] finished tweaking crates.io crate slim-futures 0.1.0-alpha.0 [INFO] tweaked toml for crates.io crate slim-futures 0.1.0-alpha.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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 89 packages [INFO] [stderr] Adding anes v0.1.6 (latest: v0.2.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding clap v3.2.25 (latest: v4.5.4) [INFO] [stderr] Adding clap_lex v0.2.4 (latest: v0.7.0) [INFO] [stderr] Adding criterion v0.4.0 (latest: v0.5.1) [INFO] [stderr] Adding hashbrown v0.12.3 (latest: v0.14.3) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding indexmap v1.9.3 (latest: v2.2.6) [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.12.1) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding os_str_bytes v6.6.1 (latest: v7.0.0) [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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 26bad0351be236f37435d7ea3f15dfcab24ed9e6a118d3d1bab8a714ced0e97d [INFO] running `Command { std: "docker" "start" "-a" "26bad0351be236f37435d7ea3f15dfcab24ed9e6a118d3d1bab8a714ced0e97d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "26bad0351be236f37435d7ea3f15dfcab24ed9e6a118d3d1bab8a714ced0e97d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "26bad0351be236f37435d7ea3f15dfcab24ed9e6a118d3d1bab8a714ced0e97d", kill_on_drop: false }` [INFO] [stdout] 26bad0351be236f37435d7ea3f15dfcab24ed9e6a118d3d1bab8a714ced0e97d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d571023a3aa5e299e160a1a3f6ad91450fd3d7644409a0b251bcd88fb79c57ec [INFO] running `Command { std: "docker" "start" "-a" "d571023a3aa5e299e160a1a3f6ad91450fd3d7644409a0b251bcd88fb79c57ec", kill_on_drop: false }` [INFO] [stderr] Checking futures-channel v0.3.30 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking fn-traits v0.1.2 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Checking tokio v1.37.0 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking serde v1.0.197 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking slim-futures v0.1.0-alpha.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking futures v0.3.30 [INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code` [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FlattenFn` is never constructed [INFO] [stdout] --> src/async_iter/flatten.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct FlattenFn { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code` [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `FlattenFn` is never constructed [INFO] [stdout] --> src/async_iter/flatten.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct FlattenFn { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | unused_tuple_struct_fields, [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 16.58s [INFO] running `Command { std: "docker" "inspect" "d571023a3aa5e299e160a1a3f6ad91450fd3d7644409a0b251bcd88fb79c57ec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d571023a3aa5e299e160a1a3f6ad91450fd3d7644409a0b251bcd88fb79c57ec", kill_on_drop: false }` [INFO] [stdout] d571023a3aa5e299e160a1a3f6ad91450fd3d7644409a0b251bcd88fb79c57ec