[INFO] updating cached repository https://github.com/dora-gt/tokio-future-lock [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 800659518d6e604804941a766057ba5ce7ccdb4e [INFO] checking dora-gt/tokio-future-lock against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdora-gt%2Ftokio-future-lock" "/workspace/builds/worker-14/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dora-gt/tokio-future-lock on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7 [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/dora-gt/tokio-future-lock [INFO] finished tweaking git repo https://github.com/dora-gt/tokio-future-lock [INFO] tweaked toml for git repo https://github.com/dora-gt/tokio-future-lock written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/dora-gt/tokio-future-lock already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] af13d6628e4a5ac459e5110d44dc31b6812ba4d34f9794397258c7edfb83a8c4 [INFO] running `"docker" "start" "-a" "af13d6628e4a5ac459e5110d44dc31b6812ba4d34f9794397258c7edfb83a8c4"` [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking parking_lot_core v0.6.2 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking parking_lot v0.9.0 [INFO] [stderr] Checking tokio-reactor v0.1.10 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-future-lock v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `IntoFuture`, `future::join_all` [INFO] [stderr] --> src/main.rs:2:15 [INFO] [stderr] | [INFO] [stderr] 2 | use futures::{future::join_all, Future, IntoFuture}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future::ok` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use futures::future::ok; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Level` [INFO] [stderr] --> src/main.rs:4:18 [INFO] [stderr] | [INFO] [stderr] 4 | use log::{debug, Level}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `log::Level::Debug` [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use log::Level::Debug; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::Arc` [INFO] [stderr] --> src/main.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::sync::Arc; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::panic::resume_unwind` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::panic::resume_unwind; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:28:23 [INFO] [stderr] | [INFO] [stderr] 28 | .map_err(|err| ()) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:66:26 [INFO] [stderr] | [INFO] [stderr] 66 | Async::Ready(mut guard) => { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `IntoFuture`, `future::join_all` [INFO] [stderr] --> src/main.rs:2:15 [INFO] [stderr] | [INFO] [stderr] 2 | use futures::{future::join_all, Future, IntoFuture}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future::ok` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use futures::future::ok; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Level` [INFO] [stderr] --> src/main.rs:4:18 [INFO] [stderr] | [INFO] [stderr] 4 | use log::{debug, Level}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `log::Level::Debug` [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use log::Level::Debug; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::Arc` [INFO] [stderr] --> src/main.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::sync::Arc; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::panic::resume_unwind` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::panic::resume_unwind; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:45:5 [INFO] [stderr] | [INFO] [stderr] 45 | runtime.block_on_all(fut_2); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/main.rs:28:23 [INFO] [stderr] | [INFO] [stderr] 28 | .map_err(|err| ()) [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:66:26 [INFO] [stderr] | [INFO] [stderr] 66 | Async::Ready(mut guard) => { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:45:5 [INFO] [stderr] | [INFO] [stderr] 45 | runtime.block_on_all(fut_2); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.18s [INFO] running `"docker" "inspect" "af13d6628e4a5ac459e5110d44dc31b6812ba4d34f9794397258c7edfb83a8c4"` [INFO] running `"docker" "rm" "-f" "af13d6628e4a5ac459e5110d44dc31b6812ba4d34f9794397258c7edfb83a8c4"` [INFO] [stdout] af13d6628e4a5ac459e5110d44dc31b6812ba4d34f9794397258c7edfb83a8c4