[INFO] cloning repository https://github.com/noormohammedb/rust-async-playbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noormohammedb/rust-async-playbook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoormohammedb%2Frust-async-playbook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoormohammedb%2Frust-async-playbook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3888555ee8ab3b10f5b6eaabeaa16cd3fc5d4b1
[INFO] testing noormohammedb/rust-async-playbook against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoormohammedb%2Frust-async-playbook" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/noormohammedb/rust-async-playbook
[INFO] finished tweaking git repo https://github.com/noormohammedb/rust-async-playbook
[INFO] tweaked toml for git repo https://github.com/noormohammedb/rust-async-playbook written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/noormohammedb/rust-async-playbook on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/noormohammedb/rust-async-playbook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 481e7b5b1ab763c8676c9442f68462299c7c5a1828ce8033846164bf10070751
[INFO] running `Command { std: "docker" "start" "-a" "481e7b5b1ab763c8676c9442f68462299c7c5a1828ce8033846164bf10070751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "481e7b5b1ab763c8676c9442f68462299c7c5a1828ce8033846164bf10070751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481e7b5b1ab763c8676c9442f68462299c7c5a1828ce8033846164bf10070751", kill_on_drop: false }`
[INFO] [stdout] 481e7b5b1ab763c8676c9442f68462299c7c5a1828ce8033846164bf10070751
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f036c59f997eed6a193abd5f60feb2663f1f457842c20cbbe1abd908e6de8f8f
[INFO] running `Command { std: "docker" "start" "-a" "f036c59f997eed6a193abd5f60feb2663f1f457842c20cbbe1abd908e6de8f8f", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling simple_async v0.1.0 (/opt/rustwide/workdir/simple_async)
[INFO] [stdout] warning: unused import: `Pending`
[INFO] [stdout]  --> simple_async/src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |   future::{Future, Pending},
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `bar` should have an upper camel case name
[INFO] [stdout]   --> simple_async/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct bar {
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case: `Bar`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `koo`
[INFO] [stdout]  --> simple_async/src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let koo = foo1();
[INFO] [stdout]   |       ^^^ help: if this is intentional, prefix it with an underscore: `_koo`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]   --> simple_async/src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     cx: &mut std::task::Context<'_>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo2` is never used
[INFO] [stdout]   --> simple_async/src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn foo2() -> impl Future<Output = usize> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `bar` is never constructed
[INFO] [stdout]   --> simple_async/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct bar {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo3` is never used
[INFO] [stdout]   --> simple_async/src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn foo3() -> impl Future<Output = usize> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "f036c59f997eed6a193abd5f60feb2663f1f457842c20cbbe1abd908e6de8f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f036c59f997eed6a193abd5f60feb2663f1f457842c20cbbe1abd908e6de8f8f", kill_on_drop: false }`
[INFO] [stdout] f036c59f997eed6a193abd5f60feb2663f1f457842c20cbbe1abd908e6de8f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea28dc50c054bd103ba5fdf09f1173a292b44e4795ea627fc0bc86d1db96b155
[INFO] running `Command { std: "docker" "start" "-a" "ea28dc50c054bd103ba5fdf09f1173a292b44e4795ea627fc0bc86d1db96b155", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling simple_async v0.1.0 (/opt/rustwide/workdir/simple_async)
[INFO] [stdout] warning: unused import: `Pending`
[INFO] [stdout]  --> simple_async/src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |   future::{Future, Pending},
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `bar` should have an upper camel case name
[INFO] [stdout]   --> simple_async/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct bar {
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case: `Bar`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `koo`
[INFO] [stdout]  --> simple_async/src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let koo = foo1();
[INFO] [stdout]   |       ^^^ help: if this is intentional, prefix it with an underscore: `_koo`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]   --> simple_async/src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     cx: &mut std::task::Context<'_>,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo2` is never used
[INFO] [stdout]   --> simple_async/src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn foo2() -> impl Future<Output = usize> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `bar` is never constructed
[INFO] [stdout]   --> simple_async/src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct bar {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo3` is never used
[INFO] [stdout]   --> simple_async/src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn foo3() -> impl Future<Output = usize> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "ea28dc50c054bd103ba5fdf09f1173a292b44e4795ea627fc0bc86d1db96b155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea28dc50c054bd103ba5fdf09f1173a292b44e4795ea627fc0bc86d1db96b155", kill_on_drop: false }`
[INFO] [stdout] ea28dc50c054bd103ba5fdf09f1173a292b44e4795ea627fc0bc86d1db96b155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 07ae57e33b44f000da79865a12e220f0b4813e7e47a746e47b0125c4fcaf1575
[INFO] running `Command { std: "docker" "start" "-a" "07ae57e33b44f000da79865a12e220f0b4813e7e47a746e47b0125c4fcaf1575", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stdout] 
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stdout] running 0 tests
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stdout] 
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: unused import: `Pending`
[INFO] [stdout] 
[INFO] [stderr]  --> simple_async/src/main.rs:2:20
[INFO] [stderr]   |
[INFO] [stderr] 2 |   future::{Future, Pending},
[INFO] [stderr]   |                    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `bar` should have an upper camel case name
[INFO] [stderr]   --> simple_async/src/main.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct bar {
[INFO] [stderr]    |        ^^^ help: convert the identifier to upper camel case: `Bar`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `koo`
[INFO] [stderr]  --> simple_async/src/main.rs:9:7
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let koo = foo1();
[INFO] [stderr]   |       ^^^ help: if this is intentional, prefix it with an underscore: `_koo`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cx`
[INFO] [stderr]   --> simple_async/src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     cx: &mut std::task::Context<'_>,
[INFO] [stderr]    |     ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stderr] 
[INFO] [stderr] warning: function `foo2` is never used
[INFO] [stderr]   --> simple_async/src/main.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn foo2() -> impl Future<Output = usize> {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `bar` is never constructed
[INFO] [stderr]   --> simple_async/src/main.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct bar {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `foo3` is never used
[INFO] [stderr]   --> simple_async/src/main.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn foo3() -> impl Future<Output = usize> {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_async` (bin "simple_async" test) generated 7 warnings (run `cargo fix --bin "simple_async" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/simple_async-0b6402ec90f3db7a)
[INFO] running `Command { std: "docker" "inspect" "07ae57e33b44f000da79865a12e220f0b4813e7e47a746e47b0125c4fcaf1575", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ae57e33b44f000da79865a12e220f0b4813e7e47a746e47b0125c4fcaf1575", kill_on_drop: false }`
[INFO] [stdout] 07ae57e33b44f000da79865a12e220f0b4813e7e47a746e47b0125c4fcaf1575