[INFO] fetching crate screwsat 2.1.5...
[INFO] testing screwsat-2.1.5 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate screwsat 2.1.5 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate screwsat 2.1.5
[INFO] finished tweaking crates.io crate screwsat 2.1.5
[INFO] tweaked toml for crates.io crate screwsat 2.1.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate screwsat 2.1.5 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate screwsat 2.1.5 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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aede25322843594c5d24e4bf7de68bbc869a175420129957e99caf2592ad8e49
[INFO] running `Command { std: "docker" "start" "-a" "aede25322843594c5d24e4bf7de68bbc869a175420129957e99caf2592ad8e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aede25322843594c5d24e4bf7de68bbc869a175420129957e99caf2592ad8e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aede25322843594c5d24e4bf7de68bbc869a175420129957e99caf2592ad8e49", kill_on_drop: false }`
[INFO] [stdout] aede25322843594c5d24e4bf7de68bbc869a175420129957e99caf2592ad8e49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f377e0ed3e52510d3762ca4c5a304b6aa395bd748b9e803614e684237be8863
[INFO] running `Command { std: "docker" "start" "-a" "7f377e0ed3e52510d3762ca4c5a304b6aa395bd748b9e803614e684237be8863", kill_on_drop: false }`
[INFO] [stderr]    Compiling screwsat v2.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |         fn iter(&self) -> ClauseIter {
[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] 76 |         fn iter(&self) -> ClauseIter<'_> {
[INFO] [stdout]    |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |         fn iter(&self) -> ClauseIter {
[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] 116 |         fn iter(&self) -> ClauseIter<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |         fn iter_mut(&mut self) -> ClauseIterMut {
[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] 120 |         fn iter_mut(&mut self) -> ClauseIterMut<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:139:30
[INFO] [stdout]     |
[INFO] [stdout] 139 |         pub fn as_clause_ref(&mut self) -> ClauseRef {
[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] 139 |         pub fn as_clause_ref(&mut self) -> ClauseRef<'_> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:436:16
[INFO] [stdout]     |
[INFO] [stdout] 436 |         fn get(&self, cref: CRef) -> ClauseRef {
[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] 436 |         fn get(&self, cref: CRef) -> ClauseRef<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:453:20
[INFO] [stdout]     |
[INFO] [stdout] 453 |         fn get_mut(&mut self, cref: CRef) -> ClauseMut {
[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] 453 |         fn get_mut(&mut self, cref: CRef) -> ClauseMut<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]     --> src/lib.rs:1322:38
[INFO] [stdout]      |
[INFO] [stdout] 1322 | ...                   unsafe { &mut (*watchers_ptr)[!clause[1]].push(w) };
[INFO] [stdout]      |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]      |
[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] 1322 |                             unsafe { let _ = &mut (*watchers_ptr)[!clause[1]].push(w); };
[INFO] [stdout]      |                                      +++++++                                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]     --> src/lib.rs:1322:43
[INFO] [stdout]      |
[INFO] [stdout] 1322 | ...                   unsafe { &mut (*watchers_ptr)[!clause[1]].push(w) };
[INFO] [stdout]      |                                     ^^------------^^^^^^^^^^^^^
[INFO] [stdout]      |                                       |
[INFO] [stdout]      |                                       this raw pointer has type `*mut Vec<Vec<Watcher>>`
[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<Vec<Watcher>>`
[INFO] [stdout]     --> src/lib.rs:1322:43
[INFO] [stdout]      |
[INFO] [stdout] 1322 | ...                   unsafe { &mut (*watchers_ptr)[!clause[1]].push(w) };
[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] 1322 |                             unsafe { &mut (&mut (*watchers_ptr))[!clause[1]].push(w) };
[INFO] [stdout]      |                                           +++++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `screwsat` (lib) due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7f377e0ed3e52510d3762ca4c5a304b6aa395bd748b9e803614e684237be8863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f377e0ed3e52510d3762ca4c5a304b6aa395bd748b9e803614e684237be8863", kill_on_drop: false }`
[INFO] [stdout] 7f377e0ed3e52510d3762ca4c5a304b6aa395bd748b9e803614e684237be8863