[INFO] cloning repository https://github.com/kituyiharry/rustasync-futures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kituyiharry/rustasync-futures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkituyiharry%2Frustasync-futures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkituyiharry%2Frustasync-futures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e682894267e6a08768d9e626ca6a07d1b6f2d49
[INFO] testing kituyiharry/rustasync-futures against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkituyiharry%2Frustasync-futures" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kituyiharry/rustasync-futures on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kituyiharry/rustasync-futures
[INFO] finished tweaking git repo https://github.com/kituyiharry/rustasync-futures
[INFO] tweaked toml for git repo https://github.com/kituyiharry/rustasync-futures written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/kituyiharry/rustasync-futures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 072bf2618650ad1c4b5cbfcf2c360ac673daa8591647c446074aacf829b30368
[INFO] running `Command { std: "docker" "start" "-a" "072bf2618650ad1c4b5cbfcf2c360ac673daa8591647c446074aacf829b30368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "072bf2618650ad1c4b5cbfcf2c360ac673daa8591647c446074aacf829b30368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "072bf2618650ad1c4b5cbfcf2c360ac673daa8591647c446074aacf829b30368", kill_on_drop: false }`
[INFO] [stdout] 072bf2618650ad1c4b5cbfcf2c360ac673daa8591647c446074aacf829b30368
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 870f9441a892c7cfa231d447dc92db148cf98d1f0ee5d22245ab957f38e16616
[INFO] running `Command { std: "docker" "start" "-a" "870f9441a892c7cfa231d447dc92db148cf98d1f0ee5d22245ab957f38e16616", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling futures-task v0.3.4
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling mfutures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `genums`
[INFO] [stdout]    --> src/main.rs:144:4
[INFO] [stdout]     |
[INFO] [stdout] 144 | fn genums() -> impl std::ops::Generator<Yield = u32, Return = ()> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.33s
[INFO] running `Command { std: "docker" "inspect" "870f9441a892c7cfa231d447dc92db148cf98d1f0ee5d22245ab957f38e16616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870f9441a892c7cfa231d447dc92db148cf98d1f0ee5d22245ab957f38e16616", kill_on_drop: false }`
[INFO] [stdout] 870f9441a892c7cfa231d447dc92db148cf98d1f0ee5d22245ab957f38e16616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6642af02f58c832dea05d1228c573b15f3e9c064a0933606018e6fc6e0e5bcd1
[INFO] running `Command { std: "docker" "start" "-a" "6642af02f58c832dea05d1228c573b15f3e9c064a0933606018e6fc6e0e5bcd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling mfutures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `genums`
[INFO] [stdout]    --> src/main.rs:144:4
[INFO] [stdout]     |
[INFO] [stdout] 144 | fn genums() -> impl std::ops::Generator<Yield = u32, Return = ()> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6642af02f58c832dea05d1228c573b15f3e9c064a0933606018e6fc6e0e5bcd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6642af02f58c832dea05d1228c573b15f3e9c064a0933606018e6fc6e0e5bcd1", kill_on_drop: false }`
[INFO] [stdout] 6642af02f58c832dea05d1228c573b15f3e9c064a0933606018e6fc6e0e5bcd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 57fae6f9e48a59f601c8f8de868e7578a64cc85fde4914c3b21ab01e54aa4bc0
[INFO] running `Command { std: "docker" "start" "-a" "57fae6f9e48a59f601c8f8de868e7578a64cc85fde4914c3b21ab01e54aa4bc0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `genums`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:144:4
[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] 144 | fn genums() -> impl std::ops::Generator<Yield = u32, Return = ()> {
[INFO] [stdout] 
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mfutures` (bin "mfutures" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mfutures-24f9c78970be7f3b)
[INFO] running `Command { std: "docker" "inspect" "57fae6f9e48a59f601c8f8de868e7578a64cc85fde4914c3b21ab01e54aa4bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57fae6f9e48a59f601c8f8de868e7578a64cc85fde4914c3b21ab01e54aa4bc0", kill_on_drop: false }`
[INFO] [stdout] 57fae6f9e48a59f601c8f8de868e7578a64cc85fde4914c3b21ab01e54aa4bc0