[INFO] cloning repository https://github.com/jonathanGB/mdb-write-proxy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathanGB/mdb-write-proxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b9831dba54ff92232b6f8f3acf6a889bcea1543
[INFO] checking jonathanGB/mdb-write-proxy against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathanGB/mdb-write-proxy 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/jonathanGB/mdb-write-proxy
[INFO] finished tweaking git repo https://github.com/jonathanGB/mdb-write-proxy
[INFO] tweaked toml for git repo https://github.com/jonathanGB/mdb-write-proxy written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathanGB/mdb-write-proxy 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 }`
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[INFO] [stdout] 31a66d05949344b823b6e6048a9676249fce11f5e9004d8c50481b5eaf8e32b9
[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" "31a66d05949344b823b6e6048a9676249fce11f5e9004d8c50481b5eaf8e32b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31a66d05949344b823b6e6048a9676249fce11f5e9004d8c50481b5eaf8e32b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31a66d05949344b823b6e6048a9676249fce11f5e9004d8c50481b5eaf8e32b9", kill_on_drop: false }`
[INFO] [stdout] 31a66d05949344b823b6e6048a9676249fce11f5e9004d8c50481b5eaf8e32b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0055220c0fab2cb9f5b1d9bbe6083751936443c302d1058aca078384a04173fe
[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" "0055220c0fab2cb9f5b1d9bbe6083751936443c302d1058aca078384a04173fe", kill_on_drop: false }`
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[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> examples/simple/main.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl Future`
[INFO] [stdout]  --> examples/simple/main.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | async fn main() {
[INFO] [stdout]   |                 ^ `main` can only return types that implement `Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 52 | |         .insert(
[INFO] [stdout] 53 | |             "Messages",
[INFO] [stdout] 54 | |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout] 55 | |         )
[INFO] [stdout] 56 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout]    |                            ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 52 | |         .insert(
[INFO] [stdout] 53 | |             "Messages",
[INFO] [stdout] 54 | |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout] 55 | |         )
[INFO] [stdout] 56 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:64:32
[INFO] [stdout]    |
[INFO] [stdout] 64 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]    |                                ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |             vec![3.into(), 2.into(), "message from #3 to #2".into()],
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:67:11
[INFO] [stdout]    |
[INFO] [stdout] 67 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 68 | |         .insert(
[INFO] [stdout] 69 | |             "Messages",
[INFO] [stdout] 70 | |             vec![3.into(), 2.into(), "message from #3 to #2".into()],
[INFO] [stdout] 71 | |         )
[INFO] [stdout] 72 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 |             vec![3.into(), 2.into(), "message from #3 to #2".into()],
[INFO] [stdout]    |                            ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:67:11
[INFO] [stdout]    |
[INFO] [stdout] 67 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 68 | |         .insert(
[INFO] [stdout] 69 | |             "Messages",
[INFO] [stdout] 70 | |             vec![3.into(), 2.into(), "message from #3 to #2".into()],
[INFO] [stdout] 71 | |         )
[INFO] [stdout] 72 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:80:32
[INFO] [stdout]    |
[INFO] [stdout] 80 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]    |                                ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:83:11
[INFO] [stdout]    |
[INFO] [stdout] 83 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 84 | |         .insert(
[INFO] [stdout] 85 | |             "Messages",
[INFO] [stdout] 86 | |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout] 87 | |         )
[INFO] [stdout] 88 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:86:28
[INFO] [stdout]    |
[INFO] [stdout] 86 |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout]    |                            ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:83:11
[INFO] [stdout]    |
[INFO] [stdout] 83 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 84 | |         .insert(
[INFO] [stdout] 85 | |             "Messages",
[INFO] [stdout] 86 | |             vec![3.into(), 4.into(), "message from #3 to #4".into()],
[INFO] [stdout] 87 | |         )
[INFO] [stdout] 88 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:97:18
[INFO] [stdout]    |
[INFO] [stdout] 97 |             vec![3.into(), 1.into(), "message from #3 to #1".into()],
[INFO] [stdout]    |                  ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:94:11
[INFO] [stdout]    |
[INFO] [stdout] 94 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 95 | |         .insert(
[INFO] [stdout] 96 | |             "Messages",
[INFO] [stdout] 97 | |             vec![3.into(), 1.into(), "message from #3 to #1".into()],
[INFO] [stdout] 98 | |         )
[INFO] [stdout] 99 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> examples/simple/main.rs:97:28
[INFO] [stdout]    |
[INFO] [stdout] 97 |             vec![3.into(), 1.into(), "message from #3 to #1".into()],
[INFO] [stdout]    |                            ^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> examples/simple/main.rs:94:11
[INFO] [stdout]    |
[INFO] [stdout] 94 |       match write_proxy
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 95 | |         .insert(
[INFO] [stdout] 96 | |             "Messages",
[INFO] [stdout] 97 | |             vec![3.into(), 1.into(), "message from #3 to #1".into()],
[INFO] [stdout] 98 | |         )
[INFO] [stdout] 99 | |         .await
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]    --> examples/simple/main.rs:107:32
[INFO] [stdout]     |
[INFO] [stdout] 107 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]     |                                ^ cannot infer type for type `{integer}`
[INFO] [stdout]     |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]    --> examples/simple/main.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         messages_view.lookup(&[3.into()], true).await.unwrap()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> examples/simple/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | async fn main() {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433, E0698, E0752.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdb-write-proxy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0055220c0fab2cb9f5b1d9bbe6083751936443c302d1058aca078384a04173fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0055220c0fab2cb9f5b1d9bbe6083751936443c302d1058aca078384a04173fe", kill_on_drop: false }`
[INFO] [stdout] 0055220c0fab2cb9f5b1d9bbe6083751936443c302d1058aca078384a04173fe
