[INFO] cloning repository https://github.com/twissel/bench-locks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twissel/bench-locks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwissel%2Fbench-locks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwissel%2Fbench-locks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 984b1c6832478652efbbdc3cc3bc9a1f842cfd10
[INFO] checking twissel/bench-locks against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwissel%2Fbench-locks" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/twissel/bench-locks on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/twissel/bench-locks
[INFO] finished tweaking git repo https://github.com/twissel/bench-locks
[INFO] tweaked toml for git repo https://github.com/twissel/bench-locks written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/twissel/bench-locks already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.18
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", 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] 04b86071d73e65b611e79d4f40b970592b3801eae18a7567e1e612b1bf3df953
[INFO] running `Command { std: "docker" "start" "-a" "04b86071d73e65b611e79d4f40b970592b3801eae18a7567e1e612b1bf3df953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04b86071d73e65b611e79d4f40b970592b3801eae18a7567e1e612b1bf3df953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b86071d73e65b611e79d4f40b970592b3801eae18a7567e1e612b1bf3df953", kill_on_drop: false }`
[INFO] [stdout] 04b86071d73e65b611e79d4f40b970592b3801eae18a7567e1e612b1bf3df953
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb1c999fbfa2d834569907fd9946fd9ce7fa7ca8d0046b5ba61490fc52cd603d
[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" "cb1c999fbfa2d834569907fd9946fd9ce7fa7ca8d0046b5ba61490fc52cd603d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
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[INFO] [stderr]     Checking smallvec v0.6.10
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[INFO] [stderr]     Checking bytes v0.4.12
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[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
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[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.7.0
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[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]    Compiling tracing-attributes v0.1.2
[INFO] [stderr]    Compiling tokio-macros v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]    Compiling async-trait v0.1.11
[INFO] [stderr]     Checking tracing v0.1.7
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-timer v0.3.0
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking async-std v0.99.4
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking tokio v0.2.0-alpha.4 (https://github.com/tokio-rs/tokio#9766cd64)
[INFO] [stderr]     Checking async-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: future cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:136:39
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 futures.push(executor.spawn_with_handle(fut).unwrap());
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout] note: future is not `Send` as this value is used across an await
[INFO] [stdout]    --> src/main.rs:135:40
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let fut = async move { counter.get().await };
[INFO] [stdout]     |                                        -------^^^^^^^^^^^^ - `counter` is later dropped here
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        await occurs here, with `counter` maybe used later
[INFO] [stdout]     |                                        has type `&C` which is not `Send`
[INFO] [stdout] help: consider moving this into a `let` binding to create a shorter lived borrow
[INFO] [stdout]    --> src/main.rs:135:40
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let fut = async move { counter.get().await };
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout] help: consider further restricting this bound
[INFO] [stdout]     |
[INFO] [stdout] 117 | async fn test<C: CounterTrait + Sync>(
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: future cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:136:39
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 futures.push(executor.spawn_with_handle(fut).unwrap());
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout] note: future is not `Send` as this value is used across an await
[INFO] [stdout]    --> src/main.rs:135:40
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let fut = async move { counter.get().await };
[INFO] [stdout]     |                                        -------^^^^^^^^^^^^ - `counter` is later dropped here
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        await occurs here, with `counter` maybe used later
[INFO] [stdout]     |                                        has type `&C` which is not `Send`
[INFO] [stdout] help: consider moving this into a `let` binding to create a shorter lived borrow
[INFO] [stdout]    --> src/main.rs:135:40
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let fut = async move { counter.get().await };
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^
[INFO] [stdout] help: consider further restricting this bound
[INFO] [stdout]     |
[INFO] [stdout] 117 | async fn test<C: CounterTrait + Sync>(
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: future cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:143:39
[INFO] [stdout]     |
[INFO] [stdout] 143 |                 futures.push(executor.spawn_with_handle(fut).unwrap());
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout] note: future is not `Send` as this value is used across an await
[INFO] [stdout]    --> src/main.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     counter.set(new_val).await;
[INFO] [stdout]     |                     -------^^^^^^^^^^^^^^^^^^^- `counter` is later dropped here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     await occurs here, with `counter` maybe used later
[INFO] [stdout]     |                     has type `&C` which is not `Send`
[INFO] [stdout] help: consider moving this into a `let` binding to create a shorter lived borrow
[INFO] [stdout]    --> src/main.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     counter.set(new_val).await;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider further restricting this bound
[INFO] [stdout]     |
[INFO] [stdout] 117 | async fn test<C: CounterTrait + Sync>(
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: future cannot be sent between threads safely
[INFO] [stdout]    --> src/main.rs:143:39
[INFO] [stdout]     |
[INFO] [stdout] 143 |                 futures.push(executor.spawn_with_handle(fut).unwrap());
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
[INFO] [stdout]     |
[INFO] [stdout] note: future is not `Send` as this value is used across an await
[INFO] [stdout]    --> src/main.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     counter.set(new_val).await;
[INFO] [stdout]     |                     -------^^^^^^^^^^^^^^^^^^^- `counter` is later dropped here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     await occurs here, with `counter` maybe used later
[INFO] [stdout]     |                     has type `&C` which is not `Send`
[INFO] [stdout] help: consider moving this into a `let` binding to create a shorter lived borrow
[INFO] [stdout]    --> src/main.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     counter.set(new_val).await;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: consider further restricting this bound
[INFO] [stdout]     |
[INFO] [stdout] 117 | async fn test<C: CounterTrait + Sync>(
[INFO] [stdout]     |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-learn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cb1c999fbfa2d834569907fd9946fd9ce7fa7ca8d0046b5ba61490fc52cd603d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb1c999fbfa2d834569907fd9946fd9ce7fa7ca8d0046b5ba61490fc52cd603d", kill_on_drop: false }`
[INFO] [stdout] cb1c999fbfa2d834569907fd9946fd9ce7fa7ca8d0046b5ba61490fc52cd603d
