[INFO] cloning repository https://github.com/sabahtalateh/rust-async-book [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabahtalateh/rust-async-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Frust-async-book", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Frust-async-book'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1f1be3396332455f288719bd2f163fba11b7f47d [INFO] testing sabahtalateh/rust-async-book against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Frust-async-book" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sabahtalateh/rust-async-book on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sabahtalateh/rust-async-book [INFO] finished tweaking git repo https://github.com/sabahtalateh/rust-async-book [INFO] tweaked toml for git repo https://github.com/sabahtalateh/rust-async-book written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/sabahtalateh/rust-async-book already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 211dd8f67e696d5c2631ac020ac5cb8ed5c52e46d410ff0d9456b8fa9bad95b9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "211dd8f67e696d5c2631ac020ac5cb8ed5c52e46d410ff0d9456b8fa9bad95b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "211dd8f67e696d5c2631ac020ac5cb8ed5c52e46d410ff0d9456b8fa9bad95b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "211dd8f67e696d5c2631ac020ac5cb8ed5c52e46d410ff0d9456b8fa9bad95b9", kill_on_drop: false }` [INFO] [stdout] 211dd8f67e696d5c2631ac020ac5cb8ed5c52e46d410ff0d9456b8fa9bad95b9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b5e5a31128bfa6d810d05a7ac6de886693692d6df663312bc68871d172d02471 [INFO] running `Command { std: "docker" "start" "-a" "b5e5a31128bfa6d810d05a7ac6de886693692d6df663312bc68871d172d02471", kill_on_drop: false }` [INFO] [stderr] Compiling futures v0.1.29 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling nodrop v0.1.13 [INFO] [stderr] Compiling smallvec v0.6.10 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling try-lock v0.2.2 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling num_cpus v1.10.1 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling hyper v0.12.34 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling owning_ref v0.4.0 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling lock_api v0.1.5 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling http v0.1.18 [INFO] [stderr] Compiling string v0.2.1 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling tokio-sync v0.1.6 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling tokio-buf v0.1.1 [INFO] [stderr] Compiling want v0.2.0 [INFO] [stderr] Compiling futures-cpupool v0.1.8 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling tokio-threadpool v0.1.15 [INFO] [stderr] Compiling parking_lot v0.7.1 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.22 [INFO] [stderr] Compiling h2 v0.1.26 [INFO] [stderr] Compiling http-body v0.1.0 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling async-await-echo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::process::Output` [INFO] [stdout] --> src/bin/executor.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::process::Output; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/pin.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let a = "1".as_bytes().to_vec(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/event_loop.rs:52:20 [INFO] [stdout] | [INFO] [stdout] 52 | Ok(mut t) => { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/event_loop.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | self.tasks_sender.send(task); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [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] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 52.01s [INFO] running `Command { std: "docker" "inspect" "b5e5a31128bfa6d810d05a7ac6de886693692d6df663312bc68871d172d02471", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5e5a31128bfa6d810d05a7ac6de886693692d6df663312bc68871d172d02471", kill_on_drop: false }` [INFO] [stdout] b5e5a31128bfa6d810d05a7ac6de886693692d6df663312bc68871d172d02471 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 755e2b258b1ce431f8accbfcd61e3296e3c47bc6ed2b6270d84fd41ea863b3f6 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "755e2b258b1ce431f8accbfcd61e3296e3c47bc6ed2b6270d84fd41ea863b3f6", kill_on_drop: false }` [INFO] [stderr] Compiling async-await-echo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::process::Output` [INFO] [stdout] --> src/bin/executor.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::process::Output; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/event_loop.rs:52:20 [INFO] [stdout] | [INFO] [stdout] 52 | Ok(mut t) => { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/pin.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let a = "1".as_bytes().to_vec(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/bin/event_loop.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | self.tasks_sender.send(task); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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 test [unoptimized + debuginfo] target(s) in 2.85s [INFO] running `Command { std: "docker" "inspect" "755e2b258b1ce431f8accbfcd61e3296e3c47bc6ed2b6270d84fd41ea863b3f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "755e2b258b1ce431f8accbfcd61e3296e3c47bc6ed2b6270d84fd41ea863b3f6", kill_on_drop: false }` [INFO] [stdout] 755e2b258b1ce431f8accbfcd61e3296e3c47bc6ed2b6270d84fd41ea863b3f6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4cc3cb5265e13a77ce33510e4f7ddf9ac6dfe9a8ad5b1859ec475deb7fda2b51 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4cc3cb5265e13a77ce33510e4f7ddf9ac6dfe9a8ad5b1859ec475deb7fda2b51", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stdout] [INFO] [stderr] warning: unused variable: `a` [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/bin/pin.rs:54:9 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 54 | let a = "1".as_bytes().to_vec(); [INFO] [stdout] [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] running 0 tests [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] warning: `async-await-echo` (bin "pin" test) generated 1 warning [INFO] [stdout] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stdout] [INFO] [stderr] --> src/bin/event_loop.rs:52:20 [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 52 | Ok(mut t) => { [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | ----^ [INFO] [stdout] [INFO] [stderr] | | [INFO] [stdout] [INFO] [stderr] | help: remove this `mut` [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] [INFO] [stdout] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stdout] [INFO] [stderr] --> src/bin/event_loop.rs:38:9 [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 38 | self.tasks_sender.send(task); [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [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: `async-await-echo` (bin "event_loop" test) generated 2 warnings [INFO] [stderr] warning: unused import: `std::process::Output` [INFO] [stderr] --> src/bin/executor.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::process::Output; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `async-await-echo` (bin "executor" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.18s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/event_loop-81893b41f5bc967d) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/executor-8e06588282ca05b9) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/future-f0522cb549b8a0e9) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/pin-c7312d12c77dee9c) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/waker-b5a29174dddaf579) [INFO] running `Command { std: "docker" "inspect" "4cc3cb5265e13a77ce33510e4f7ddf9ac6dfe9a8ad5b1859ec475deb7fda2b51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cc3cb5265e13a77ce33510e4f7ddf9ac6dfe9a8ad5b1859ec475deb7fda2b51", kill_on_drop: false }` [INFO] [stdout] 4cc3cb5265e13a77ce33510e4f7ddf9ac6dfe9a8ad5b1859ec475deb7fda2b51