[INFO] fetching crate rustpython-common 0.4.0...
[INFO] checking rustpython-common-0.4.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rustpython-common 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rustpython-common 0.4.0
[INFO] finished tweaking crates.io crate rustpython-common 0.4.0
[INFO] tweaked toml for crates.io crate rustpython-common 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustpython-common 0.4.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 77 packages to latest compatible versions
[INFO] [stderr]       Adding bstr v0.2.17 (available: v1.12.1)
[INFO] [stderr]       Adding itertools v0.11.0 (available: v0.14.0)
[INFO] [stderr]       Adding malachite-base v0.4.22 (available: v0.7.0)
[INFO] [stderr]       Adding malachite-bigint v0.2.3 (available: v0.7.0)
[INFO] [stderr]       Adding malachite-q v0.4.22 (available: v0.7.0)
[INFO] [stderr]       Adding radium v0.7.0 (available: v1.1.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding siphasher v0.3.11 (available: v1.0.1)
[INFO] [stderr]       Adding volatile v0.3.0 (available: v0.6.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.61.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 141476e4676e24ac9bcea094d88418e65b386fa46778b2ff7782e98472841241
[INFO] running `Command { std: "docker" "start" "-a" "141476e4676e24ac9bcea094d88418e65b386fa46778b2ff7782e98472841241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141476e4676e24ac9bcea094d88418e65b386fa46778b2ff7782e98472841241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141476e4676e24ac9bcea094d88418e65b386fa46778b2ff7782e98472841241", kill_on_drop: false }`
[INFO] [stdout] 141476e4676e24ac9bcea094d88418e65b386fa46778b2ff7782e98472841241
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bea3e952250ab0d14838835d89b625d489596c3f859d0e1f362385520f0f4e3d
[INFO] running `Command { std: "docker" "start" "-a" "bea3e952250ab0d14838835d89b625d489596c3f859d0e1f362385520f0f4e3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling malachite-nz v0.4.22
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking hexf-parse v0.2.1
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking volatile v0.3.0
[INFO] [stderr]     Checking unic-ucd-category v0.9.0
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]     Checking malachite-base v0.4.22
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]    Compiling derive_more-impl v1.0.0
[INFO] [stderr]    Compiling is-macro v0.3.7
[INFO] [stderr]     Checking rustpython-literal v0.4.0
[INFO] [stderr]     Checking derive_more v1.0.0
[INFO] [stderr]     Checking malachite-q v0.4.22
[INFO] [stderr]     Checking malachite v0.4.22
[INFO] [stderr]     Checking malachite-bigint v0.2.3
[INFO] [stderr]     Checking rustpython-format v0.4.0
[INFO] [stderr]     Checking rustpython-common v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<NonNull<T>, Void>
[INFO] [stdout]   --> src/atomic.rs:95:15
[INFO] [stdout]    |
[INFO] [stdout] 95 |         match self.get_or_try_init(|| Ok::<_, Void>(f())) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Box<T>, Void>
[INFO] [stdout]   --> src/atomic.rs:95:39
[INFO] [stdout]    |
[INFO] [stdout] 95 |         match self.get_or_try_init(|| Ok::<_, Void>(f())) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/boxvec.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn drain<R>(&mut self, range: R) -> Drain<T>
[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] 279 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/boxvec.rs:307:20
[INFO] [stdout]     |
[INFO] [stdout] 307 |     fn drain_range(&mut self, start: usize, end: usize) -> Drain<T> {
[INFO] [stdout]     |                    ^^^^^^^^^ the lifetime is elided here   ^^^^^^^^ the same lifetime is hidden 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] 307 |     fn drain_range(&mut self, start: usize, end: usize) -> Drain<'_, T> {
[INFO] [stdout]     |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lock/thread_mutex.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn lock(&self) -> Option<ThreadMutexGuard<R, G, T>> {
[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] 96 |     pub fn lock(&self) -> Option<ThreadMutexGuard<'_, R, G, T>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lock/thread_mutex.rs:106:21
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn try_lock(&self) -> Result<ThreadMutexGuard<R, G, T>, TryLockThreadError> {
[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] 106 |     pub fn try_lock(&self) -> Result<ThreadMutexGuard<'_, R, G, T>, TryLockThreadError> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustpython-common` (lib test) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<NonNull<T>, Void>
[INFO] [stdout]   --> src/atomic.rs:95:15
[INFO] [stdout]    |
[INFO] [stdout] 95 |         match self.get_or_try_init(|| Ok::<_, Void>(f())) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Box<T>, Void>
[INFO] [stdout]   --> src/atomic.rs:95:39
[INFO] [stdout]    |
[INFO] [stdout] 95 |         match self.get_or_try_init(|| Ok::<_, Void>(f())) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/boxvec.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn drain<R>(&mut self, range: R) -> Drain<T>
[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] 279 |     pub fn drain<R>(&mut self, range: R) -> Drain<'_, T>
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/boxvec.rs:307:20
[INFO] [stdout]     |
[INFO] [stdout] 307 |     fn drain_range(&mut self, start: usize, end: usize) -> Drain<T> {
[INFO] [stdout]     |                    ^^^^^^^^^ the lifetime is elided here   ^^^^^^^^ the same lifetime is hidden 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] 307 |     fn drain_range(&mut self, start: usize, end: usize) -> Drain<'_, T> {
[INFO] [stdout]     |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lock/thread_mutex.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub fn lock(&self) -> Option<ThreadMutexGuard<R, G, T>> {
[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] 96 |     pub fn lock(&self) -> Option<ThreadMutexGuard<'_, R, G, T>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lock/thread_mutex.rs:106:21
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn try_lock(&self) -> Result<ThreadMutexGuard<R, G, T>, TryLockThreadError> {
[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] 106 |     pub fn try_lock(&self) -> Result<ThreadMutexGuard<'_, R, G, T>, TryLockThreadError> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustpython-common` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bea3e952250ab0d14838835d89b625d489596c3f859d0e1f362385520f0f4e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bea3e952250ab0d14838835d89b625d489596c3f859d0e1f362385520f0f4e3d", kill_on_drop: false }`
[INFO] [stdout] bea3e952250ab0d14838835d89b625d489596c3f859d0e1f362385520f0f4e3d
