[INFO] fetching crate tower-load 0.3.0... [INFO] checking tower-load-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate tower-load 0.3.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate tower-load 0.3.0 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] started tweaking crates.io crate tower-load 0.3.0 [INFO] finished tweaking crates.io crate tower-load 0.3.0 [INFO] tweaked toml for crates.io crate tower-load 0.3.0 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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 23 packages [INFO] [stderr] Adding bytes v0.5.6 (latest: v1.6.0) [INFO] [stderr] Adding pin-project v0.4.30 (latest: v1.1.5) [INFO] [stderr] Adding pin-project-internal v0.4.30 (latest: v1.1.5) [INFO] [stderr] Adding pin-project-lite v0.1.12 (latest: v0.2.14) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding tokio v0.2.25 (latest: v1.37.0) [INFO] [stderr] Adding tokio-macros v0.2.6 (latest: v2.2.0) [INFO] [stderr] Adding tokio-test v0.2.1 (latest: v0.4.4) [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 tokio-test v0.2.1 [INFO] [stderr] Downloaded tower-discover v0.3.0 [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] 77630f03230c1bd1d5b536cf47f04e7452bd29618223407d25f8d341e975586f [INFO] running `Command { std: "docker" "start" "-a" "77630f03230c1bd1d5b536cf47f04e7452bd29618223407d25f8d341e975586f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "77630f03230c1bd1d5b536cf47f04e7452bd29618223407d25f8d341e975586f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77630f03230c1bd1d5b536cf47f04e7452bd29618223407d25f8d341e975586f", kill_on_drop: false }` [INFO] [stdout] 77630f03230c1bd1d5b536cf47f04e7452bd29618223407d25f8d341e975586f [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] 7ce6527936564edf5c878fc1eb522deac863c67eaa4d6a3a50203b7be7e4e24c [INFO] running `Command { std: "docker" "start" "-a" "7ce6527936564edf5c878fc1eb522deac863c67eaa4d6a3a50203b7be7e4e24c", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking futures-core v0.3.30 [INFO] [stderr] Compiling pin-project-internal v0.4.30 [INFO] [stderr] Checking pin-project-lite v0.1.12 [INFO] [stderr] Checking futures-task v0.3.30 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Compiling tokio-macros v0.2.6 [INFO] [stderr] Checking tokio v0.2.25 [INFO] [stderr] Checking pin-project v0.4.30 [INFO] [stderr] Checking tower-discover v0.3.0 [INFO] [stderr] Checking tokio-test v0.2.1 [INFO] [stderr] Checking tower-load v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/pending_requests.rs:43:19 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(RefCount); [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Duration` is imported redundantly [INFO] [stdout] --> src/peak_ewma.rs:312:9 [INFO] [stdout] | [INFO] [stdout] 312 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 316 | use super::*; [INFO] [stdout] | -------- the item `Duration` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Context` is imported redundantly [INFO] [stdout] --> src/pending_requests.rs:147:21 [INFO] [stdout] | [INFO] [stdout] 145 | use super::*; [INFO] [stdout] | -------- the item `Context` is already imported here [INFO] [stdout] 146 | use futures_util::future; [INFO] [stdout] 147 | use std::task::{Context, Poll}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Poll` is imported redundantly [INFO] [stdout] --> src/pending_requests.rs:147:30 [INFO] [stdout] | [INFO] [stdout] 145 | use super::*; [INFO] [stdout] | -------- the item `Poll` is already imported here [INFO] [stdout] 146 | use futures_util::future; [INFO] [stdout] 147 | use std::task::{Context, Poll}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/pending_requests.rs:43:19 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(RefCount); [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.18s [INFO] running `Command { std: "docker" "inspect" "7ce6527936564edf5c878fc1eb522deac863c67eaa4d6a3a50203b7be7e4e24c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ce6527936564edf5c878fc1eb522deac863c67eaa4d6a3a50203b7be7e4e24c", kill_on_drop: false }` [INFO] [stdout] 7ce6527936564edf5c878fc1eb522deac863c67eaa4d6a3a50203b7be7e4e24c [INFO] checking tower-load-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate tower-load 0.3.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate tower-load 0.3.0 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] started tweaking crates.io crate tower-load 0.3.0 [INFO] finished tweaking crates.io crate tower-load 0.3.0 [INFO] tweaked toml for crates.io crate tower-load 0.3.0 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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 23 packages [INFO] [stderr] Adding bytes v0.5.6 (latest: v1.6.0) [INFO] [stderr] Adding pin-project v0.4.30 (latest: v1.1.5) [INFO] [stderr] Adding pin-project-internal v0.4.30 (latest: v1.1.5) [INFO] [stderr] Adding pin-project-lite v0.1.12 (latest: v0.2.14) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding tokio v0.2.25 (latest: v1.37.0) [INFO] [stderr] Adding tokio-macros v0.2.6 (latest: v2.2.0) [INFO] [stderr] Adding tokio-test v0.2.1 (latest: v0.4.4) [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] 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] 8041c598ccc9f431011c4356d41faf95e05dd1666dc55face74ebfb54be42f2f [INFO] running `Command { std: "docker" "start" "-a" "8041c598ccc9f431011c4356d41faf95e05dd1666dc55face74ebfb54be42f2f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8041c598ccc9f431011c4356d41faf95e05dd1666dc55face74ebfb54be42f2f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8041c598ccc9f431011c4356d41faf95e05dd1666dc55face74ebfb54be42f2f", kill_on_drop: false }` [INFO] [stdout] 8041c598ccc9f431011c4356d41faf95e05dd1666dc55face74ebfb54be42f2f [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] f4921b6cc91275c593b7c8cb08edd273aab3948bfaa12950da967b71ceda95cf [INFO] running `Command { std: "docker" "start" "-a" "f4921b6cc91275c593b7c8cb08edd273aab3948bfaa12950da967b71ceda95cf", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking futures-core v0.3.30 [INFO] [stderr] Compiling pin-project-internal v0.4.30 [INFO] [stderr] Checking pin-project-lite v0.1.12 [INFO] [stderr] Checking futures-task v0.3.30 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Compiling tokio-macros v0.2.6 [INFO] [stderr] Checking tokio v0.2.25 [INFO] [stderr] Checking pin-project v0.4.30 [INFO] [stderr] Checking tower-discover v0.3.0 [INFO] [stderr] Checking tokio-test v0.2.1 [INFO] [stderr] Checking tower-load v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Duration` is imported redundantly [INFO] [stdout] --> src/peak_ewma.rs:312:9 [INFO] [stdout] | [INFO] [stdout] 312 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 316 | use super::*; [INFO] [stdout] | -------- the item `Duration` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Context` is imported redundantly [INFO] [stdout] --> src/pending_requests.rs:147:21 [INFO] [stdout] | [INFO] [stdout] 145 | use super::*; [INFO] [stdout] | -------- the item `Context` is already imported here [INFO] [stdout] 146 | use futures_util::future; [INFO] [stdout] 147 | use std::task::{Context, Poll}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Poll` is imported redundantly [INFO] [stdout] --> src/pending_requests.rs:147:30 [INFO] [stdout] | [INFO] [stdout] 145 | use super::*; [INFO] [stdout] | -------- the item `Poll` is already imported here [INFO] [stdout] 146 | use futures_util::future; [INFO] [stdout] 147 | use std::task::{Context, Poll}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/pending_requests.rs:43:19 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(RefCount); [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/pending_requests.rs:43:19 [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(RefCount); [INFO] [stdout] | ------ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Handle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 43 | pub struct Handle(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.27s [INFO] running `Command { std: "docker" "inspect" "f4921b6cc91275c593b7c8cb08edd273aab3948bfaa12950da967b71ceda95cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f4921b6cc91275c593b7c8cb08edd273aab3948bfaa12950da967b71ceda95cf", kill_on_drop: false }` [INFO] [stdout] f4921b6cc91275c593b7c8cb08edd273aab3948bfaa12950da967b71ceda95cf