[INFO] cloning repository https://github.com/indutny/tokio-lock [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/indutny/tokio-lock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Ftokio-lock", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Ftokio-lock'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] da5d0b59fc75461cab266c228bd8940c0649a6c7 [INFO] checking indutny/tokio-lock against try#23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 for pr-115950 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Ftokio-lock" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/indutny/tokio-lock on toolchain 23ffd2897cbb44320ca18dfe4d05dbacb37d55e0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/indutny/tokio-lock [INFO] finished tweaking git repo https://github.com/indutny/tokio-lock [INFO] tweaked toml for git repo https://github.com/indutny/tokio-lock written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/indutny/tokio-lock 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" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 314d545a0ef835976ac7dae2671cd8577839b0c1aadbb01454a4345335c37dca [INFO] running `Command { std: "docker" "start" "-a" "314d545a0ef835976ac7dae2671cd8577839b0c1aadbb01454a4345335c37dca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "314d545a0ef835976ac7dae2671cd8577839b0c1aadbb01454a4345335c37dca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "314d545a0ef835976ac7dae2671cd8577839b0c1aadbb01454a4345335c37dca", kill_on_drop: false }` [INFO] [stdout] 314d545a0ef835976ac7dae2671cd8577839b0c1aadbb01454a4345335c37dca [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23ffd2897cbb44320ca18dfe4d05dbacb37d55e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 091cf789654722821e15cd48434a82dc5520335b5c8f8dab2b99e4a435d6e03a [INFO] running `Command { std: "docker" "start" "-a" "091cf789654722821e15cd48434a82dc5520335b5c8f8dab2b99e4a435d6e03a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking futures v0.1.25 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking smallvec v0.6.8 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking bytes v0.4.11 [INFO] [stderr] Checking crossbeam-deque v0.6.3 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking tokio-executor v0.1.6 [INFO] [stderr] Checking tokio-io v0.1.11 [INFO] [stderr] Checking tokio-sync v0.1.1 [INFO] [stderr] Checking tokio-timer v0.2.10 [INFO] [stderr] Checking tokio-current-thread v0.1.4 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking tokio-reactor v0.1.8 [INFO] [stderr] Checking crossbeam v0.6.0 [INFO] [stderr] Checking tokio-threadpool v0.1.11 [INFO] [stderr] Checking tokio-udp v0.1.3 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio-fs v0.1.5 [INFO] [stderr] Checking tokio v0.1.15 [INFO] [stderr] Checking tokio-lock v1.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:59:19 [INFO] [stdout] | [INFO] [stdout] 59 | type AnyBox = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 59 | type AnyBox = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:73:14 [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:73:32 [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:74:15 [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:74:37 [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:117:14 [INFO] [stdout] | [INFO] [stdout] 117 | ) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 117 | ) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:59:19 [INFO] [stdout] | [INFO] [stdout] 59 | type AnyBox = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 59 | type AnyBox = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:73:14 [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:73:32 [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 73 | Read(Box<(FnMut(&T) -> Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:74:15 [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:74:37 [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 74 | Write(Box<(FnMut(&mut T) -> Box + Send>) + Send>), [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:117:14 [INFO] [stdout] | [INFO] [stdout] 117 | ) -> Box + Send> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 117 | ) -> Box + Send> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/error.rs:29:30 [INFO] [stdout] | [INFO] [stdout] 29 | write!(f, "{}", self.description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/error.rs:29:30 [INFO] [stdout] | [INFO] [stdout] 29 | write!(f, "{}", self.description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0597]: `l` does not live long enough [INFO] [stdout] --> src/lib.rs:207:20 [INFO] [stdout] | [INFO] [stdout] 206 | let mut l = Lock::new(); [INFO] [stdout] | ----- binding `l` declared here [INFO] [stdout] 207 | let poll = l.manage(o).map_err(|err| { [INFO] [stdout] | ^---------- [INFO] [stdout] | | [INFO] [stdout] | borrowed value does not live long enough [INFO] [stdout] | argument requires that `l` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 227 | } [INFO] [stdout] | - `l` dropped here while still borrowed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0499]: cannot borrow `l` as mutable more than once at a time [INFO] [stdout] --> src/lib.rs:211:21 [INFO] [stdout] | [INFO] [stdout] 207 | let poll = l.manage(o).map_err(|err| { [INFO] [stdout] | ----------- [INFO] [stdout] | | [INFO] [stdout] | first mutable borrow occurs here [INFO] [stdout] | argument requires that `l` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 211 | let get_x = l.get(|o| -> FutureResult { future::ok(o.x) }); [INFO] [stdout] | ^ second mutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0502]: cannot borrow `l` as immutable because it is also borrowed as mutable [INFO] [stdout] --> src/lib.rs:212:21 [INFO] [stdout] | [INFO] [stdout] 207 | let poll = l.manage(o).map_err(|err| { [INFO] [stdout] | ----------- [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | argument requires that `l` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 212 | let get_y = l [INFO] [stdout] | ^ immutable borrow occurs here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> src/lib.rs:212:21 [INFO] [stdout] | [INFO] [stdout] 212 | let get_y = l [INFO] [stdout] | ______________________^ [INFO] [stdout] | | _____________________| [INFO] [stdout] | || [INFO] [stdout] 213 | || .clone() [INFO] [stdout] | ||____________________^ creates a temporary value which is freed while still in use [INFO] [stdout] 214 | | .get(|o| -> FutureResult { future::ok(o.y) }); [INFO] [stdout] | | -- temporary value is freed at the end of this statement [INFO] [stdout] | |______________________________________________________________________| [INFO] [stdout] | argument requires that borrow lasts for `'static` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0505]: cannot move out of `l` because it is borrowed [INFO] [stdout] --> src/lib.rs:221:18 [INFO] [stdout] | [INFO] [stdout] 206 | let mut l = Lock::new(); [INFO] [stdout] | ----- binding `l` declared here [INFO] [stdout] 207 | let poll = l.manage(o).map_err(|err| { [INFO] [stdout] | ----------- [INFO] [stdout] | | [INFO] [stdout] | borrow of `l` occurs here [INFO] [stdout] | argument requires that `l` is borrowed for `'static` [INFO] [stdout] ... [INFO] [stdout] 221 | .map(move |val| { [INFO] [stdout] | ^^^^^^^^^^ move out of `l` occurs here [INFO] [stdout] 222 | assert_eq!(val, (23, 42)); [INFO] [stdout] 223 | l.stop(); [INFO] [stdout] | - move occurs due to use in closure [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors; 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0499, E0502, E0505, E0597, E0716. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0499`. [INFO] [stdout] [INFO] [stderr] error: could not compile `tokio-lock` (lib test) due to 6 previous errors; 7 warnings emitted [INFO] running `Command { std: "docker" "inspect" "091cf789654722821e15cd48434a82dc5520335b5c8f8dab2b99e4a435d6e03a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "091cf789654722821e15cd48434a82dc5520335b5c8f8dab2b99e4a435d6e03a", kill_on_drop: false }` [INFO] [stdout] 091cf789654722821e15cd48434a82dc5520335b5c8f8dab2b99e4a435d6e03a