[INFO] fetching crate nano_arena 0.5.2... [INFO] testing nano_arena-0.5.2 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1 [INFO] extracting crate nano_arena 0.5.2 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate nano_arena 0.5.2 [INFO] finished tweaking crates.io crate nano_arena 0.5.2 [INFO] tweaked toml for crates.io crate nano_arena 0.5.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate nano_arena 0.5.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 64 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.3.6 (available: v0.7.0) [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3e6696d26008d6e1bd0a4e7920413c01687985ef8531c1ab34b2b36639bab954 [INFO] running `Command { std: "docker" "start" "-a" "3e6696d26008d6e1bd0a4e7920413c01687985ef8531c1ab34b2b36639bab954", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3e6696d26008d6e1bd0a4e7920413c01687985ef8531c1ab34b2b36639bab954", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e6696d26008d6e1bd0a4e7920413c01687985ef8531c1ab34b2b36639bab954", kill_on_drop: false }` [INFO] [stdout] 3e6696d26008d6e1bd0a4e7920413c01687985ef8531c1ab34b2b36639bab954 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 7d9da0ce042f6f9836bb1be8a4c948703a10233e09052fe46c3dc0599653314a [INFO] running `Command { std: "docker" "start" "-a" "7d9da0ce042f6f9836bb1be8a4c948703a10233e09052fe46c3dc0599653314a", kill_on_drop: false }` [INFO] [stderr] Compiling nano_arena v0.5.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:226:18 [INFO] [stdout] | [INFO] [stdout] 224 | &'a mut self, [INFO] [stdout] | -- the lifetime is named here [INFO] [stdout] 225 | selected: I, [INFO] [stdout] 226 | ) -> Option<(&mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ^^^^^^ -- the same lifetime is named here [INFO] [stdout] | | [INFO] [stdout] | the same 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: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 226 | ) -> Option<(&'a mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s [INFO] running `Command { std: "docker" "inspect" "7d9da0ce042f6f9836bb1be8a4c948703a10233e09052fe46c3dc0599653314a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7d9da0ce042f6f9836bb1be8a4c948703a10233e09052fe46c3dc0599653314a", kill_on_drop: false }` [INFO] [stdout] 7d9da0ce042f6f9836bb1be8a4c948703a10233e09052fe46c3dc0599653314a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7a20234f21516701b6ba9d53c9e9d49a96e366130d8e24912c2397b18883e574 [INFO] running `Command { std: "docker" "start" "-a" "7a20234f21516701b6ba9d53c9e9d49a96e366130d8e24912c2397b18883e574", kill_on_drop: false }` [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling unicode-ident v1.0.19 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling autocfg v1.5.0 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Compiling libc v0.2.176 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling ryu v1.0.20 [INFO] [stderr] Compiling itoa v1.0.15 [INFO] [stderr] Compiling plotters-backend v0.3.7 [INFO] [stderr] Compiling unicode-width v0.1.14 [INFO] [stderr] Compiling regex-syntax v0.8.6 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling half v1.8.3 [INFO] [stderr] Compiling plotters-svg v0.3.7 [INFO] [stderr] Compiling cast v0.3.0 [INFO] [stderr] Compiling oorandom v11.1.5 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:226:18 [INFO] [stdout] | [INFO] [stdout] 224 | &'a mut self, [INFO] [stdout] | -- the lifetime is named here [INFO] [stdout] 225 | selected: I, [INFO] [stdout] 226 | ) -> Option<(&mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ^^^^^^ -- the same lifetime is named here [INFO] [stdout] | | [INFO] [stdout] | the same 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: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 226 | ) -> Option<(&'a mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling csv-core v0.1.12 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling crossbeam-deque v0.8.6 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling criterion-plot v0.4.5 [INFO] [stderr] Compiling regex-automata v0.4.11 [INFO] [stderr] Compiling plotters v0.3.7 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling regex v1.11.3 [INFO] [stderr] Compiling csv v1.3.1 [INFO] [stderr] Compiling serde_cbor v0.11.2 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling criterion v0.3.6 [INFO] [stderr] Compiling nano_arena v0.5.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:226:18 [INFO] [stdout] | [INFO] [stdout] 224 | &'a mut self, [INFO] [stdout] | -- the lifetime is named here [INFO] [stdout] 225 | selected: I, [INFO] [stdout] 226 | ) -> Option<(&mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ^^^^^^ -- the same lifetime is named here [INFO] [stdout] | | [INFO] [stdout] | the same 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: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 226 | ) -> Option<(&'a mut T, ArenaSplit<'a, T>)> { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:760:9 [INFO] [stdout] | [INFO] [stdout] 760 | drop(first_mut_ref); [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&mut i32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 760 - drop(first_mut_ref); [INFO] [stdout] 760 + let _ = first_mut_ref; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 28.92s [INFO] running `Command { std: "docker" "inspect" "7a20234f21516701b6ba9d53c9e9d49a96e366130d8e24912c2397b18883e574", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7a20234f21516701b6ba9d53c9e9d49a96e366130d8e24912c2397b18883e574", kill_on_drop: false }` [INFO] [stdout] 7a20234f21516701b6ba9d53c9e9d49a96e366130d8e24912c2397b18883e574 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e1f17951004a93402e79a4a3d17bd47050c27e2a005ef1bc193ff7bc13e99aa1 [INFO] running `Command { std: "docker" "start" "-a" "e1f17951004a93402e79a4a3d17bd47050c27e2a005ef1bc193ff7bc13e99aa1", kill_on_drop: false }` [INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing [INFO] [stderr] --> src/lib.rs:226:18 [INFO] [stderr] | [INFO] [stderr] 224 | &'a mut self, [INFO] [stderr] | -- the lifetime is named here [INFO] [stderr] 225 | selected: I, [INFO] [stderr] 226 | ) -> Option<(&mut T, ArenaSplit<'a, T>)> { [INFO] [stderr] | ^^^^^^ -- the same lifetime is named here [INFO] [stderr] | | [INFO] [stderr] | the same lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: consistently use `'a` [INFO] [stderr] | [INFO] [stderr] 226 | ) -> Option<(&'a mut T, ArenaSplit<'a, T>)> { [INFO] [stderr] | ++ [INFO] [stderr] [INFO] [stderr] warning: `nano_arena` (lib) generated 1 warning (run `cargo fix --lib -p nano_arena` to apply 1 suggestion) [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/lib.rs:760:9 [INFO] [stderr] | [INFO] [stderr] 760 | drop(first_mut_ref); [INFO] [stderr] | ^^^^^-------------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&mut i32` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_references)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 760 - drop(first_mut_ref); [INFO] [stderr] 760 + let _ = first_mut_ref; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `nano_arena` (lib test) generated 2 warnings (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nano_arena-cca37db840fa6bfa) [INFO] [stdout] running 24 tests [INFO] [stdout] test tests::apply_ordering ... ok [INFO] [stdout] test tests::cloned_index_should_equal ... ok [INFO] [stdout] test tests::arena_length ... ok [INFO] [stdout] test tests::alloc_with_idx ... ok [INFO] [stdout] test tests::compare_should_work_for_idx ... ok [INFO] [stdout] test tests::convert_to_vec ... ok [INFO] [stdout] test tests::debug_printing ... ok [INFO] [stdout] test tests::get_mut ... ok [INFO] [stdout] test tests::getting_by_index ... ok [INFO] [stdout] test tests::index_should_be_hashable ... ok [INFO] [stdout] test tests::iter ... ok [INFO] [stdout] test tests::splitting_should_be_safe ... ok [INFO] [stdout] test tests::should_construct_default ... ok [INFO] [stdout] test tests::swap_indexes ... ok [INFO] [stdout] test tests::swap_remove ... ok [INFO] [stdout] test tests::remove ... ok [INFO] [stdout] test tests::retain ... ok [INFO] [stdout] test tests::truncate ... ok [INFO] [stdout] test tests::remove_should_remove_last_value ... ok [INFO] [stdout] test tests::position ... ok [INFO] [stdout] test tests::turn_iterator_into_vector ... ok [INFO] [stdout] test tests::should_construct_with_capacity ... ok [INFO] [stdout] test tests::mut_iter ... ok [INFO] [stdout] test tests::split_at ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] [stderr] Doc-tests nano_arena [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e1f17951004a93402e79a4a3d17bd47050c27e2a005ef1bc193ff7bc13e99aa1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1f17951004a93402e79a4a3d17bd47050c27e2a005ef1bc193ff7bc13e99aa1", kill_on_drop: false }` [INFO] [stdout] e1f17951004a93402e79a4a3d17bd47050c27e2a005ef1bc193ff7bc13e99aa1