[INFO] fetching crate bronze_gc 0.0.1... [INFO] checking bronze_gc-0.0.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744 [INFO] extracting crate bronze_gc 0.0.1 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate bronze_gc 0.0.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate bronze_gc 0.0.1 [INFO] finished tweaking crates.io crate bronze_gc 0.0.1 [INFO] tweaked toml for crates.io crate bronze_gc 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bronze_derive v0.0.1 [INFO] [stderr] Downloaded multiset v0.0.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 52998a32d8bd4dd7172a0852f2b7ae8438e0dabb7f24fe24456c0762e7fddac9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "52998a32d8bd4dd7172a0852f2b7ae8438e0dabb7f24fe24456c0762e7fddac9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "52998a32d8bd4dd7172a0852f2b7ae8438e0dabb7f24fe24456c0762e7fddac9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52998a32d8bd4dd7172a0852f2b7ae8438e0dabb7f24fe24456c0762e7fddac9", kill_on_drop: false }` [INFO] [stdout] 52998a32d8bd4dd7172a0852f2b7ae8438e0dabb7f24fe24456c0762e7fddac9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bf104b1a48c4c5a3968f2f8bc17dae154c47ddc8de61254a56f8707b4efa6ccb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "bf104b1a48c4c5a3968f2f8bc17dae154c47ddc8de61254a56f8707b4efa6ccb", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling syn v1.0.69 [INFO] [stderr] Compiling regex-syntax v0.6.23 [INFO] [stderr] Compiling termcolor v1.1.2 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling bindgen v0.56.0 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling humantime v2.1.0 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling shlex v0.1.1 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling peeking_take_while v0.1.2 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Checking gimli v0.23.0 [INFO] [stderr] Checking multiset v0.0.5 [INFO] [stderr] Checking object v0.23.0 [INFO] [stderr] Checking rustc-demangle v0.1.18 [INFO] [stderr] Compiling libloading v0.7.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Checking lock_api v0.4.3 [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Compiling clang-sys v1.2.0 [INFO] [stderr] Compiling aho-corasick v0.7.15 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling which v3.1.1 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling regex v1.4.5 [INFO] [stderr] Compiling cexpr v0.4.0 [INFO] [stderr] Checking addr2line v0.14.1 [INFO] [stderr] Checking backtrace v0.3.56 [INFO] [stderr] Compiling env_logger v0.8.3 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling serial_test_derive v0.5.1 [INFO] [stderr] Compiling bronze_derive v0.0.1 [INFO] [stderr] Checking serial_test v0.5.1 [INFO] [stderr] Compiling bronze_gc v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> build.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::PathBuf` [INFO] [stdout] --> build.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::path::PathBuf; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::ffi::c_void` [INFO] [stdout] --> src/lib.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | use core::ffi::c_void; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::ffi::c_void` [INFO] [stdout] --> src/lib.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | use core::ffi::c_void; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `USED_SPACE_RATIO` [INFO] [stdout] --> src/lib.rs:41:1 [INFO] [stdout] | [INFO] [stdout] 41 | const USED_SPACE_RATIO: f64 = 0.7; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `threshold` [INFO] [stdout] --> src/lib.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | threshold: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `nonnull_boxes_start` [INFO] [stdout] --> src/lib.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | nonnull_boxes_start: Option>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `vtable` [INFO] [stdout] --> src/lib.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | vtable: *mut Vtable, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `marked` [INFO] [stdout] --> src/lib.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | marked: Cell, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `header` [INFO] [stdout] --> src/lib.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 93 | header: GcBoxHeader, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `trace_inner` [INFO] [stdout] --> src/lib.rs:137:26 [INFO] [stdout] | [INFO] [stdout] 137 | pub(crate) unsafe fn trace_inner(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `erased` [INFO] [stdout] --> src/lib.rs:149:8 [INFO] [stdout] | [INFO] [stdout] 149 | fn erased(&self) -> &GcBox { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `dyn_data` [INFO] [stdout] --> src/lib.rs:159:8 [INFO] [stdout] | [INFO] [stdout] 159 | fn dyn_data(&self) -> &dyn GcTrace { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_box` [INFO] [stdout] --> src/lib.rs:276:19 [INFO] [stdout] | [INFO] [stdout] 276 | pub(crate) fn as_box<'a> (&'a self) -> &GcBox { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `NullableBoxRef` [INFO] [stdout] --> src/lib.rs:420:5 [INFO] [stdout] | [INFO] [stdout] 420 | NullableBoxRef(NonNull>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `USED_SPACE_RATIO` [INFO] [stdout] --> src/lib.rs:41:1 [INFO] [stdout] | [INFO] [stdout] 41 | const USED_SPACE_RATIO: f64 = 0.7; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `threshold` [INFO] [stdout] --> src/lib.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | threshold: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `nonnull_boxes_start` [INFO] [stdout] --> src/lib.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | nonnull_boxes_start: Option>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `vtable` [INFO] [stdout] --> src/lib.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | vtable: *mut Vtable, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `marked` [INFO] [stdout] --> src/lib.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | marked: Cell, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `header` [INFO] [stdout] --> src/lib.rs:93:5 [INFO] [stdout] | [INFO] [stdout] 93 | header: GcBoxHeader, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `trace_inner` [INFO] [stdout] --> src/lib.rs:137:26 [INFO] [stdout] | [INFO] [stdout] 137 | pub(crate) unsafe fn trace_inner(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `erased` [INFO] [stdout] --> src/lib.rs:149:8 [INFO] [stdout] | [INFO] [stdout] 149 | fn erased(&self) -> &GcBox { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `dyn_data` [INFO] [stdout] --> src/lib.rs:159:8 [INFO] [stdout] | [INFO] [stdout] 159 | fn dyn_data(&self) -> &dyn GcTrace { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `as_box` [INFO] [stdout] --> src/lib.rs:276:19 [INFO] [stdout] | [INFO] [stdout] 276 | pub(crate) fn as_box<'a> (&'a self) -> &GcBox { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `NullableBoxRef` [INFO] [stdout] --> src/lib.rs:420:5 [INFO] [stdout] | [INFO] [stdout] 420 | NullableBoxRef(NonNull>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `backtrace::Backtrace` [INFO] [stdout] --> tests/tests.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use backtrace::Backtrace; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `refs` [INFO] [stdout] --> tests/tests.rs:183:9 [INFO] [stdout] | [INFO] [stdout] 183 | let refs = TenRefs{ [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_refs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `alloc_one_tracked_obj` [INFO] [stdout] --> tests/tests.rs:139:4 [INFO] [stdout] | [INFO] [stdout] 139 | fn alloc_one_tracked_obj(tracker: Rc>) -> GcRef { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r1` [INFO] [stdout] --> tests/tests.rs:165:5 [INFO] [stdout] | [INFO] [stdout] 165 | r1: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r2` [INFO] [stdout] --> tests/tests.rs:166:5 [INFO] [stdout] | [INFO] [stdout] 166 | r2: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r3` [INFO] [stdout] --> tests/tests.rs:167:5 [INFO] [stdout] | [INFO] [stdout] 167 | r3: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r4` [INFO] [stdout] --> tests/tests.rs:168:5 [INFO] [stdout] | [INFO] [stdout] 168 | r4: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r5` [INFO] [stdout] --> tests/tests.rs:169:5 [INFO] [stdout] | [INFO] [stdout] 169 | r5: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r6` [INFO] [stdout] --> tests/tests.rs:170:5 [INFO] [stdout] | [INFO] [stdout] 170 | r6: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r7` [INFO] [stdout] --> tests/tests.rs:171:5 [INFO] [stdout] | [INFO] [stdout] 171 | r7: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r8` [INFO] [stdout] --> tests/tests.rs:172:5 [INFO] [stdout] | [INFO] [stdout] 172 | r8: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r9` [INFO] [stdout] --> tests/tests.rs:173:5 [INFO] [stdout] | [INFO] [stdout] 173 | r9: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `r10` [INFO] [stdout] --> tests/tests.rs:174:5 [INFO] [stdout] | [INFO] [stdout] 174 | r10: GcRef, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 17s [INFO] running `Command { std: "docker" "inspect" "bf104b1a48c4c5a3968f2f8bc17dae154c47ddc8de61254a56f8707b4efa6ccb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bf104b1a48c4c5a3968f2f8bc17dae154c47ddc8de61254a56f8707b4efa6ccb", kill_on_drop: false }` [INFO] [stdout] bf104b1a48c4c5a3968f2f8bc17dae154c47ddc8de61254a56f8707b4efa6ccb