[INFO] cloning repository https://github.com/yetone/mirdb [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yetone/mirdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyetone%2Fmirdb", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyetone%2Fmirdb'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 67db6c5d2c8d341978dcc2032876815f62946cce [INFO] checking yetone/mirdb against try#dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e for pr-153721 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyetone%2Fmirdb" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/yetone/mirdb [INFO] finished tweaking git repo https://github.com/yetone/mirdb [INFO] tweaked toml for git repo https://github.com/yetone/mirdb written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/yetone/mirdb on toolchain dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/yetone/mirdb 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" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd [INFO] running `Command { std: "docker" "start" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd", 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" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd", 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=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.51 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking futures v0.1.26 [INFO] [stderr] Compiling proc-macro2 v0.4.28 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Checking rand_jitter v0.1.3 [INFO] [stderr] Compiling syn v0.15.32 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Compiling serde v1.0.90 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Compiling build_const v0.2.1 [INFO] [stderr] Checking tokio-trace-core v0.1.0 [INFO] [stderr] Checking integer-encoding v1.0.5 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Compiling crc v1.8.1 [INFO] [stderr] Checking quick-error v1.2.2 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking smallvec v0.2.1 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking termcolor v1.0.4 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking take v0.1.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling bincode v1.1.3 [INFO] [stderr] Checking hashbrown v0.1.8 [INFO] [stderr] Checking snap v0.2.5 [INFO] [stderr] Checking rand_os v0.1.3 [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 rand v0.4.6 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking memmap v0.7.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking env_logger v0.6.1 [INFO] [stderr] Checking crossbeam-epoch v0.7.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking lru v0.1.15 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking skip-list v0.1.0 (/opt/rustwide/workdir/skip-list) [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/list.rs:243:62 [INFO] [stdout] | [INFO] [stdout] 243 | let old_value = next.replace_value(unsafe { mem::uninitialized() }); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/node.rs:40:27 [INFO] [stdout] | [INFO] [stdout] 40 | unsafe { mem::uninitialized() }, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/node.rs:41:27 [INFO] [stdout] | [INFO] [stdout] 41 | unsafe { mem::uninitialized() }, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/list.rs:243:62 [INFO] [stdout] | [INFO] [stdout] 243 | let old_value = next.replace_value(unsafe { mem::uninitialized() }); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/node.rs:40:27 [INFO] [stdout] | [INFO] [stdout] 40 | unsafe { mem::uninitialized() }, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> skip-list/src/node.rs:41:27 [INFO] [stdout] | [INFO] [stdout] 41 | unsafe { mem::uninitialized() }, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking tokio-executor v0.1.7 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-sync v0.1.5 [INFO] [stderr] Checking tokio-service v0.1.0 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> skip-list/src/iter.rs:42:17 [INFO] [stdout] | [INFO] [stdout] 42 | ::std::mem::replace(&mut self.0, Some(unsafe { &mut *next })); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = ::std::mem::replace(&mut self.0, Some(unsafe { &mut *next })); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer [INFO] [stdout] --> skip-list/src/list.rs:140:18 [INFO] [stdout] | [INFO] [stdout] 140 | *((*node_ptr).nexts_.get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | ^^^--------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this raw pointer has type `*mut SkipListNode` [INFO] [stdout] | [INFO] [stdout] = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements [INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&mut [*mut SkipListNode]` [INFO] [stdout] --> skip-list/src/list.rs:140:19 [INFO] [stdout] | [INFO] [stdout] 140 | *((*node_ptr).nexts_.get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] note: method calls to `get_unchecked_mut` require a reference [INFO] [stdout] --> /rustc/dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e/library/core/src/slice/mod.rs:684:4 [INFO] [stdout] = note: `#[deny(dangerous_implicit_autorefs)]` on by default [INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit [INFO] [stdout] | [INFO] [stdout] 140 | *((&mut (*node_ptr).nexts_).get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> skip-list/src/list.rs:295:17 [INFO] [stdout] | [INFO] [stdout] 295 | pub fn iter(&self) -> SkipListIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 295 | pub fn iter(&self) -> SkipListIter<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> skip-list/src/list.rs:299:21 [INFO] [stdout] | [INFO] [stdout] 299 | pub fn iter_mut(&mut self) -> SkipListIterMut { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 299 | pub fn iter_mut(&mut self) -> SkipListIterMut<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> skip-list/src/node.rs:60:13 [INFO] [stdout] | [INFO] [stdout] 60 | Box::from_raw(node_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 60 | let _ = Box::from_raw(node_ptr); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `skip-list` (lib) due to 1 previous error; 7 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> skip-list/src/iter.rs:42:17 [INFO] [stdout] | [INFO] [stdout] 42 | ::std::mem::replace(&mut self.0, Some(unsafe { &mut *next })); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 42 | let _ = ::std::mem::replace(&mut self.0, Some(unsafe { &mut *next })); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer [INFO] [stdout] --> skip-list/src/list.rs:140:18 [INFO] [stdout] | [INFO] [stdout] 140 | *((*node_ptr).nexts_.get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | ^^^--------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this raw pointer has type `*mut SkipListNode` [INFO] [stdout] | [INFO] [stdout] = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements [INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&mut [*mut SkipListNode]` [INFO] [stdout] --> skip-list/src/list.rs:140:19 [INFO] [stdout] | [INFO] [stdout] 140 | *((*node_ptr).nexts_.get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] note: method calls to `get_unchecked_mut` require a reference [INFO] [stdout] --> /rustc/dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e/library/core/src/slice/mod.rs:684:4 [INFO] [stdout] = note: `#[deny(dangerous_implicit_autorefs)]` on by default [INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit [INFO] [stdout] | [INFO] [stdout] 140 | *((&mut (*node_ptr).nexts_).get_unchecked_mut(i)) = *(update.nexts_.get_unchecked_mut(i)); [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> skip-list/src/list.rs:295:17 [INFO] [stdout] | [INFO] [stdout] 295 | pub fn iter(&self) -> SkipListIter { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 295 | pub fn iter(&self) -> SkipListIter<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> skip-list/src/list.rs:299:21 [INFO] [stdout] | [INFO] [stdout] 299 | pub fn iter_mut(&mut self) -> SkipListIterMut { [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 299 | pub fn iter_mut(&mut self) -> SkipListIterMut<'_, K, V> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> skip-list/src/node.rs:60:13 [INFO] [stdout] | [INFO] [stdout] 60 | Box::from_raw(node_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 60 | let _ = Box::from_raw(node_ptr); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `skip-list` (lib test) due to 1 previous error; 7 warnings emitted [INFO] running `Command { std: "docker" "inspect" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd", kill_on_drop: false }` [INFO] [stdout] dff4667f0f8e3721d5c5fa4583dba5b1a31f8f4abf1892014566f708e75c93bd