[INFO] fetching crate rusty-leveldb-arc 2.0.0...
[INFO] testing rusty-leveldb-arc-2.0.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate rusty-leveldb-arc 2.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rusty-leveldb-arc 2.0.0
[INFO] finished tweaking crates.io crate rusty-leveldb-arc 2.0.0
[INFO] tweaked toml for crates.io crate rusty-leveldb-arc 2.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusty-leveldb-arc 2.0.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding crc v1.8.1 (available: v3.4.0)
[INFO] [stderr]       Adding errno v0.2.8 (available: v0.3.14)
[INFO] [stderr]       Adding integer-encoding v3.0.4 (available: v4.1.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.10.1)
[INFO] [stderr]       Adding time-test v0.2.3 (available: v0.3.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc v1.8.1
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded build_const v0.2.2
[INFO] [stderr]   Downloaded time-test v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9538e902ff8b9e732c37045c91b28ec58caec050cefb53ac3d7b33c9b8258189
[INFO] running `Command { std: "docker" "start" "-a" "9538e902ff8b9e732c37045c91b28ec58caec050cefb53ac3d7b33c9b8258189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9538e902ff8b9e732c37045c91b28ec58caec050cefb53ac3d7b33c9b8258189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9538e902ff8b9e732c37045c91b28ec58caec050cefb53ac3d7b33c9b8258189", kill_on_drop: false }`
[INFO] [stdout] 9538e902ff8b9e732c37045c91b28ec58caec050cefb53ac3d7b33c9b8258189
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f06514c6e299bc68a3d13214e879503d50bb43771163ca302c424a0b1b3eb9a
[INFO] running `Command { std: "docker" "start" "-a" "1f06514c6e299bc68a3d13214e879503d50bb43771163ca302c424a0b1b3eb9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]    Compiling integer-encoding v3.0.4
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rusty-leveldb-arc v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/key_types.rs:74:25
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn memtable_key(&self) -> MemtableKey {
[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] 74 |     pub fn memtable_key(&self) -> MemtableKey<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/key_types.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn user_key(&self) -> UserKey {
[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] 79 |     pub fn user_key(&self) -> UserKey<'_> {
[INFO] [stdout]    |                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/key_types.rs:84:25
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn internal_key(&self) -> InternalKey {
[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] 84 |     pub fn internal_key(&self) -> InternalKey<'_> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:129:37
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^-------^^^^^^^^^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       this raw pointer has type `*const Node`
[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: `&Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:129:37
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^
[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] 129 |                 if let Some(next) = (&(*current).skips)[level] {
[INFO] [stdout]     |                                     ++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:172:37
[INFO] [stdout]     |
[INFO] [stdout] 172 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^-------^^^^^^^^^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       this raw pointer has type `*const Node`
[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: `&Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:172:37
[INFO] [stdout]     |
[INFO] [stdout] 172 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 172 |                 if let Some(next) = (&(*current).skips)[level] {
[INFO] [stdout]     |                                     ++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:221:37
[INFO] [stdout]     |
[INFO] [stdout] 221 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^-------^^^^^^^^^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       this raw pointer has type `*mut Node`
[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: `&Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:221:37
[INFO] [stdout]     |
[INFO] [stdout] 221 |                 if let Some(next) = (*current).skips[level] {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 221 |                 if let Some(next) = (&(*current).skips)[level] {
[INFO] [stdout]     |                                     ++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:259:36
[INFO] [stdout]     |
[INFO] [stdout] 259 |                     new.skips[i] = (*prev).skips[i];
[INFO] [stdout]     |                                    ^^----^^^^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      this raw pointer has type `*mut Node`
[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: `&Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:259:36
[INFO] [stdout]     |
[INFO] [stdout] 259 |                     new.skips[i] = (*prev).skips[i];
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 259 |                     new.skips[i] = (&(*prev).skips)[i];
[INFO] [stdout]     |                                    ++             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:260:21
[INFO] [stdout]     |
[INFO] [stdout] 260 |                     (*prev).skips[i] = Some(newp);
[INFO] [stdout]     |                     ^^----^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this raw pointer has type `*mut Node`
[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 Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:260:21
[INFO] [stdout]     |
[INFO] [stdout] 260 |                     (*prev).skips[i] = Some(newp);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 260 |                     (&mut (*prev).skips)[i] = Some(newp);
[INFO] [stdout]     |                     +++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/skipmap.rs:276:18
[INFO] [stdout]     |
[INFO] [stdout] 276 |         unsafe { replace(&mut (*current).next, Some(new)) };
[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] 276 |         unsafe { let _ = replace(&mut (*current).next, Some(new)); };
[INFO] [stdout]     |                  +++++++                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/skipmap.rs:290:37
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 if let Some(next) = (*current).skips[0].clone() {
[INFO] [stdout]     |                                     ^^-------^^^^^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       this raw pointer has type `*const Node`
[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: `&Vec<Option<*mut Node>>`
[INFO] [stdout]    --> src/skipmap.rs:290:37
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 if let Some(next) = (*current).skips[0].clone() {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 290 |                 if let Some(next) = (&(*current).skips)[0].clone() {
[INFO] [stdout]     |                                     ++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/write_batch.rs:89:17
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn iter(&self) -> WriteBatchIter {
[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] 89 |     pub fn iter(&self) -> WriteBatchIter<'_> {
[INFO] [stdout]    |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-leveldb-arc` (lib) due to 6 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1f06514c6e299bc68a3d13214e879503d50bb43771163ca302c424a0b1b3eb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f06514c6e299bc68a3d13214e879503d50bb43771163ca302c424a0b1b3eb9a", kill_on_drop: false }`
[INFO] [stdout] 1f06514c6e299bc68a3d13214e879503d50bb43771163ca302c424a0b1b3eb9a
