[INFO] cloning repository https://github.com/cxnmai/kv-db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cxnmai/kv-db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcxnmai%2Fkv-db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcxnmai%2Fkv-db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e3837dc19b0fd0a291880da109674ebc76132d4
[INFO] fixing cxnmai/kv-db against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcxnmai%2Fkv-db" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cxnmai/kv-db
[INFO] finished tweaking git repo https://github.com/cxnmai/kv-db
[INFO] tweaked toml for git repo https://github.com/cxnmai/kv-db written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cxnmai/kv-db on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cxnmai/kv-db 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nano-leb128 v0.1.0
[INFO] [stderr]   Downloaded store v0.1.0-alpha.3
[INFO] [stderr]   Downloaded byteio v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c
[INFO] running `Command { std: "docker" "start" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking byteio v0.2.3
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking socket2 v0.6.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking nano-leb128 v0.1.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking store v0.1.0-alpha.3
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.49.0
[INFO] [stderr]     Checking key-value-database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AsyncBufRead`
[INFO] [stdout]  --> src/net/connection.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{AsyncBufRead, AsyncWriteExt, BufReader},
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read_line` found for struct `tokio::io::BufReader<R>` in the current scope
[INFO] [stdout]     --> src/net/connection.rs:16:24
[INFO] [stdout]      |
[INFO] [stdout]   16 |         let n = reader.read_line(&mut line).await?;
[INFO] [stdout]      |                        ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]     ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/io/util/async_buf_read_ext.rs:199:12
[INFO] [stdout]      |
[INFO] [stdout]  199 |         fn read_line<'a>(&'a mut self, buf: &'a mut String) -> ReadLine<'a, Self>
[INFO] [stdout]      |            --------- the method is available for `tokio::io::BufReader<tokio::net::tcp::OwnedReadHalf>` here
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `read_i8` with a similar name, but with different arguments
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/io/util/async_read_ext.rs:30:17
[INFO] [stdout]      |
[INFO] [stdout]   30 |                   fn $name(&mut self) -> $($fut)*<&mut Self> where Self: Unpin {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  330 | /         read_impl! {
[INFO] [stdout]  331 | |             /// Reads an unsigned 8 bit integer from the underlying reader.
[INFO] [stdout]  332 | |             ///
[INFO] [stdout]  333 | |             /// Equivalent to:
[INFO] [stdout] ...    |
[INFO] [stdout] 1303 | |             fn read_f64_le(&mut self) -> ReadF64Le;
[INFO] [stdout] 1304 | |         }
[INFO] [stdout]      | |_________- in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `read_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: trait `AsyncBufReadExt` which provides `read_line` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]      |
[INFO] [stdout]    1 + use tokio::io::AsyncBufReadExt;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> src/net/connection.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             store.set(key.as_bytes().to_vec(), value.as_bytes().to_vec()).await?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the nightly-only, unstable trait `Try` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `OK` in this scope
[INFO] [stdout]   --> src/net/connection.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |             OK(if removed {
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/result.rs:561:4
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named tuple variant `Ok` defined here
[INFO] [stdout] help: a tuple variant with a similar name exists (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 74 -             OK(if removed {
[INFO] [stdout] 74 +             Ok(if removed {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncBufRead`
[INFO] [stdout]  --> src/net/connection.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{AsyncBufRead, AsyncWriteExt, BufReader},
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `key-value-database` (bin "key-value-database" test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `read_line` found for struct `tokio::io::BufReader<R>` in the current scope
[INFO] [stdout]     --> src/net/connection.rs:16:24
[INFO] [stdout]      |
[INFO] [stdout]   16 |         let n = reader.read_line(&mut line).await?;
[INFO] [stdout]      |                        ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]     ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/io/util/async_buf_read_ext.rs:199:12
[INFO] [stdout]      |
[INFO] [stdout]  199 |         fn read_line<'a>(&'a mut self, buf: &'a mut String) -> ReadLine<'a, Self>
[INFO] [stdout]      |            --------- the method is available for `tokio::io::BufReader<tokio::net::tcp::OwnedReadHalf>` here
[INFO] [stdout]      |
[INFO] [stdout]      = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `read_i8` with a similar name, but with different arguments
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.49.0/src/io/util/async_read_ext.rs:30:17
[INFO] [stdout]      |
[INFO] [stdout]   30 |                   fn $name(&mut self) -> $($fut)*<&mut Self> where Self: Unpin {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  330 | /         read_impl! {
[INFO] [stdout]  331 | |             /// Reads an unsigned 8 bit integer from the underlying reader.
[INFO] [stdout]  332 | |             ///
[INFO] [stdout]  333 | |             /// Equivalent to:
[INFO] [stdout] ...    |
[INFO] [stdout] 1303 | |             fn read_f64_le(&mut self) -> ReadF64Le;
[INFO] [stdout] 1304 | |         }
[INFO] [stdout]      | |_________- in this macro invocation
[INFO] [stdout]      = note: this error originates in the macro `read_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: trait `AsyncBufReadExt` which provides `read_line` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]      |
[INFO] [stdout]    1 + use tokio::io::AsyncBufReadExt;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> src/net/connection.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             store.set(key.as_bytes().to_vec(), value.as_bytes().to_vec()).await?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the nightly-only, unstable trait `Try` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `OK` in this scope
[INFO] [stdout]   --> src/net/connection.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |             OK(if removed {
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/core/src/result.rs:561:4
[INFO] [stdout]    |
[INFO] [stdout]    = note: similarly named tuple variant `Ok` defined here
[INFO] [stdout] help: a tuple variant with a similar name exists (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 74 -             OK(if removed {
[INFO] [stdout] 74 +             Ok(if removed {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `key-value-database` (bin "key-value-database") due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c", kill_on_drop: false }`
[INFO] [stdout] b9c2a93d51917e6f6a9d3f822cae6331cd6e601ef66a6ee2ccb13f21d57df10c
