[INFO] fetching crate microkv 0.2.6...
[INFO] checking microkv-0.2.6 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] extracting crate microkv 0.2.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate microkv 0.2.6 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microkv 0.2.6
[INFO] finished tweaking crates.io crate microkv 0.2.6
[INFO] tweaked toml for crates.io crate microkv 0.2.6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secstr v0.4.0
[INFO] [stderr]   Downloaded sodiumoxide v0.2.6
[INFO] [stderr]   Downloaded libsodium-sys v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c56ca55856fc5b89f93cad13132d13a517c1211acf9938484920cadfa09fc7ce
[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" "c56ca55856fc5b89f93cad13132d13a517c1211acf9938484920cadfa09fc7ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c56ca55856fc5b89f93cad13132d13a517c1211acf9938484920cadfa09fc7ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c56ca55856fc5b89f93cad13132d13a517c1211acf9938484920cadfa09fc7ce", kill_on_drop: false }`
[INFO] [stdout] c56ca55856fc5b89f93cad13132d13a517c1211acf9938484920cadfa09fc7ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 077b4011693d11ec81feb5f8310dca1611259e92cac1ad792486fe64d1718043
[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" "077b4011693d11ec81feb5f8310dca1611259e92cac1ad792486fe64d1718043", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling libsodium-sys v0.2.6
[INFO] [stderr]     Checking secstr v0.4.0
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking sodiumoxide v0.2.6
[INFO] [stderr]     Checking microkv v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/tests.rs:28:22
[INFO] [stdout]    |
[INFO] [stdout] 28 |     kv.put(KEY_NAME, value).expect("cannot insert value");
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      expected reference, found `u64`
[INFO] [stdout]    |                      help: consider borrowing here: `&value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&_`
[INFO] [stdout]                    found type `u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/tests.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     kv.put(KEY_NAME, value).expect("cannot insert value");
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      expected reference, found `i32`
[INFO] [stdout]    |                      help: consider borrowing here: `&value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&_`
[INFO] [stdout]                    found type `i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `microkv`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "077b4011693d11ec81feb5f8310dca1611259e92cac1ad792486fe64d1718043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "077b4011693d11ec81feb5f8310dca1611259e92cac1ad792486fe64d1718043", kill_on_drop: false }`
[INFO] [stdout] 077b4011693d11ec81feb5f8310dca1611259e92cac1ad792486fe64d1718043