[INFO] fetching crate leveldb 0.8.6...
[INFO] checking leveldb-0.8.6 against 1.55.0 for beta-1.56-3
[INFO] extracting crate leveldb 0.8.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate leveldb 0.8.6 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate leveldb 0.8.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate leveldb 0.8.6
[INFO] tweaked toml for crates.io crate leveldb 0.8.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8ce042c09fac69158fe49da85eebe9f43591eb3c7ad13fd2b3295d0317c1c3b
[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" "d8ce042c09fac69158fe49da85eebe9f43591eb3c7ad13fd2b3295d0317c1c3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8ce042c09fac69158fe49da85eebe9f43591eb3c7ad13fd2b3295d0317c1c3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ce042c09fac69158fe49da85eebe9f43591eb3c7ad13fd2b3295d0317c1c3b", kill_on_drop: false }`
[INFO] [stdout] d8ce042c09fac69158fe49da85eebe9f43591eb3c7ad13fd2b3295d0317c1c3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc59ac99adb4a7061a7f961bd99d59b88c7eef14ca36eb5e788c4054c69021e7
[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" "bc59ac99adb4a7061a7f961bd99d59b88c7eef14ca36eb5e788c4054c69021e7", kill_on_drop: false }`
[INFO] [stderr]     Checking ffi-opaque v2.0.1
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr]    Compiling leveldb-sys v2.0.9
[INFO] [stderr]     Checking leveldb v0.8.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database/error.rs:45:32
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database/error.rs:45:32
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]    --> src/database/iterator.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     #[inline]
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/iterator.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |   let iterable: &mut Iterable<i32> = database;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterable<i32>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/iterator.rs:99:22
[INFO] [stdout]    |
[INFO] [stdout] 99 |   let iterable: &mut Iterable<i32> = database;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterable<i32>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> tests/concurrent_access.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     (0..10).map(|i| {
[INFO] [stdout] 18 | |          let local_db = shared.clone();
[INFO] [stdout] 19 | |
[INFO] [stdout] 20 | |          thread::spawn(move || {
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | |     .map(JoinHandle::join)
[INFO] [stdout] 29 | |     .collect::<Vec<_>>();
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.02s
[INFO] running `Command { std: "docker" "inspect" "bc59ac99adb4a7061a7f961bd99d59b88c7eef14ca36eb5e788c4054c69021e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc59ac99adb4a7061a7f961bd99d59b88c7eef14ca36eb5e788c4054c69021e7", kill_on_drop: false }`
[INFO] [stdout] bc59ac99adb4a7061a7f961bd99d59b88c7eef14ca36eb5e788c4054c69021e7
