[INFO] cloning repository https://github.com/care0717/lsm_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/care0717/lsm_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcare0717%2Flsm_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcare0717%2Flsm_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ba9f8290e329ae72f2d8a70dd9069f40762eced
[INFO] checking care0717/lsm_engine against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcare0717%2Flsm_engine" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/care0717/lsm_engine on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/care0717/lsm_engine
[INFO] finished tweaking git repo https://github.com/care0717/lsm_engine
[INFO] tweaked toml for git repo https://github.com/care0717/lsm_engine written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/care0717/lsm_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f37ad8e7e7bfd3f41e963ee63baba2e85020e951798a921b68ccbc1f998cbe72
[INFO] running `Command { std: "docker" "start" "-a" "f37ad8e7e7bfd3f41e963ee63baba2e85020e951798a921b68ccbc1f998cbe72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f37ad8e7e7bfd3f41e963ee63baba2e85020e951798a921b68ccbc1f998cbe72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37ad8e7e7bfd3f41e963ee63baba2e85020e951798a921b68ccbc1f998cbe72", kill_on_drop: false }`
[INFO] [stdout] f37ad8e7e7bfd3f41e963ee63baba2e85020e951798a921b68ccbc1f998cbe72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e15a8861075f8eae7a62a2615a9aa99f9e7fdaad87220502d44b809a1e4842f
[INFO] running `Command { std: "docker" "start" "-a" "7e15a8861075f8eae7a62a2615a9aa99f9e7fdaad87220502d44b809a1e4842f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lsm_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `write` exists for struct `RwLockWriteGuard<'_, Box<(dyn Memtable<String, Value> + 'static)>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/executor.rs:32:26
[INFO] [stdout]     |
[INFO] [stdout] 32  |                   memtable.write()?.insert(key, value);
[INFO] [stdout]     |                            ^^^^^ method cannot be called on `RwLockWriteGuard<'_, Box<(dyn Memtable<String, Value> + 'static)>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/memtable.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   |   pub trait Memtable<T, U>: Sync + Send {
[INFO] [stdout]     |   ------------------------------------- doesn't satisfy `_: std::io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `(dyn Memtable<String, Value> + 'static): std::io::Write`
[INFO] [stdout]             which is required by `Box<(dyn Memtable<String, Value> + 'static)>: std::io::Write`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `write`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `std::io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `write` exists for struct `RwLockWriteGuard<'_, Box<(dyn Memtable<String, Value> + 'static)>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/executor.rs:32:26
[INFO] [stdout]     |
[INFO] [stdout] 32  |                   memtable.write()?.insert(key, value);
[INFO] [stdout]     |                            ^^^^^ method cannot be called on `RwLockWriteGuard<'_, Box<(dyn Memtable<String, Value> + 'static)>>` due to unsatisfied trait bounds
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/memtable.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   |   pub trait Memtable<T, U>: Sync + Send {
[INFO] [stdout]     |   ------------------------------------- doesn't satisfy `_: std::io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `(dyn Memtable<String, Value> + 'static): std::io::Write`
[INFO] [stdout]             which is required by `Box<(dyn Memtable<String, Value> + 'static)>: std::io::Write`
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following trait defines an item `write`, perhaps you need to implement it:
[INFO] [stdout]             candidate #1: `std::io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lsm_engine`
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7e15a8861075f8eae7a62a2615a9aa99f9e7fdaad87220502d44b809a1e4842f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e15a8861075f8eae7a62a2615a9aa99f9e7fdaad87220502d44b809a1e4842f", kill_on_drop: false }`
[INFO] [stdout] 7e15a8861075f8eae7a62a2615a9aa99f9e7fdaad87220502d44b809a1e4842f