[INFO] fetching crate arc-swap 1.3.0...
[INFO] checking arc-swap-1.3.0 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate arc-swap 1.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate arc-swap 1.3.0 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arc-swap 1.3.0
[INFO] finished tweaking crates.io crate arc-swap 1.3.0
[INFO] tweaked toml for crates.io crate arc-swap 1.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adaptive-barrier v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d05a6408ec642dcf6ede2d4e0d2d941a6b4f7280f2247979b5681ddf67a0b0d
[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" "8d05a6408ec642dcf6ede2d4e0d2d941a6b4f7280f2247979b5681ddf67a0b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d05a6408ec642dcf6ede2d4e0d2d941a6b4f7280f2247979b5681ddf67a0b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d05a6408ec642dcf6ede2d4e0d2d941a6b4f7280f2247979b5681ddf67a0b0d", kill_on_drop: false }`
[INFO] [stdout] 8d05a6408ec642dcf6ede2d4e0d2d941a6b4f7280f2247979b5681ddf67a0b0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5a8085201d3b23f54f0da9c7e13b7f82cbfea5f2454fbfb0ecb95123e9a7d4c
[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" "f5a8085201d3b23f54f0da9c7e13b7f82cbfea5f2454fbfb0ecb95123e9a7d4c", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking adaptive-barrier v0.1.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking arc-swap v1.3.0 (/tmp/fixit)
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]    Migrating tests/stress.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating benches/track.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/random.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating benches/background.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating benches/int-access.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.16s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking arc-swap v1.3.0 (/tmp/fixit)
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused variable: `moved`
[INFO] [stdout]     --> src/lib.rs:1050:21
[INFO] [stdout]      |
[INFO] [stdout] 1050 |                 let moved = As::from_pointee(42);
[INFO] [stdout]      |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_moved`
[INFO] [stdout] ...
[INFO] [stdout] 1183 | t!(tests_default, DefaultStrategy);
[INFO] [stdout]      | ----------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shared_ref`
[INFO] [stdout]     --> src/lib.rs:1051:21
[INFO] [stdout]      |
[INFO] [stdout] 1051 |                 let shared_ref = &shared;
[INFO] [stdout]      |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_shared_ref`
[INFO] [stdout] ...
[INFO] [stdout] 1183 | t!(tests_default, DefaultStrategy);
[INFO] [stdout]      | ----------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lease_ref`
[INFO] [stdout]     --> src/lib.rs:1053:21
[INFO] [stdout]      |
[INFO] [stdout] 1053 |                 let lease_ref = &lease;
[INFO] [stdout]      |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lease_ref`
[INFO] [stdout] ...
[INFO] [stdout] 1183 | t!(tests_default, DefaultStrategy);
[INFO] [stdout]      | ----------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lease`
[INFO] [stdout]     --> src/lib.rs:1054:21
[INFO] [stdout]      |
[INFO] [stdout] 1054 |                 let lease = shared.load();
[INFO] [stdout]      |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_lease`
[INFO] [stdout] ...
[INFO] [stdout] 1183 | t!(tests_default, DefaultStrategy);
[INFO] [stdout]      | ----------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.45s
[INFO] running `Command { std: "docker" "inspect" "f5a8085201d3b23f54f0da9c7e13b7f82cbfea5f2454fbfb0ecb95123e9a7d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a8085201d3b23f54f0da9c7e13b7f82cbfea5f2454fbfb0ecb95123e9a7d4c", kill_on_drop: false }`
[INFO] [stdout] f5a8085201d3b23f54f0da9c7e13b7f82cbfea5f2454fbfb0ecb95123e9a7d4c