[INFO] fetching crate memur 0.1.2...
[INFO] testing memur-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate memur 0.1.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate memur 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memur 0.1.2
[INFO] finished tweaking crates.io crate memur 0.1.2
[INFO] tweaked toml for crates.io crate memur 0.1.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c0a55ae3973a30b81e62ff12233a75e202e4a4bf08d20ce56b19eb1f19e8fb7b
[INFO] running `Command { std: "docker" "start" "-a" "c0a55ae3973a30b81e62ff12233a75e202e4a4bf08d20ce56b19eb1f19e8fb7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0a55ae3973a30b81e62ff12233a75e202e4a4bf08d20ce56b19eb1f19e8fb7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0a55ae3973a30b81e62ff12233a75e202e4a4bf08d20ce56b19eb1f19e8fb7b", kill_on_drop: false }`
[INFO] [stdout] c0a55ae3973a30b81e62ff12233a75e202e4a4bf08d20ce56b19eb1f19e8fb7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2b56c1b7dd6258f3874f19e1c13c5ed13b15319f2f5b8bc09f8b6f0412c8435
[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" "b2b56c1b7dd6258f3874f19e1c13c5ed13b15319f2f5b8bc09f8b6f0412c8435", kill_on_drop: false }`
[INFO] [stderr]    Compiling memur v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `transmute_copy` that must be used
[INFO] [stdout]    --> src/droplist.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     std::mem::transmute_copy::<T, T>(ref_to_t);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "b2b56c1b7dd6258f3874f19e1c13c5ed13b15319f2f5b8bc09f8b6f0412c8435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2b56c1b7dd6258f3874f19e1c13c5ed13b15319f2f5b8bc09f8b6f0412c8435", kill_on_drop: false }`
[INFO] [stdout] b2b56c1b7dd6258f3874f19e1c13c5ed13b15319f2f5b8bc09f8b6f0412c8435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b27f3f6ef84b836f710ca1ea5aea2028049e6cdf5241f6da71754015e7de092
[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" "8b27f3f6ef84b836f710ca1ea5aea2028049e6cdf5241f6da71754015e7de092", kill_on_drop: false }`
[INFO] [stdout] warning: unused return value of `transmute_copy` that must be used
[INFO] [stdout]    --> src/droplist.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     std::mem::transmute_copy::<T, T>(ref_to_t);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling memur v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `transmute_copy` that must be used
[INFO] [stdout]    --> src/droplist.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     std::mem::transmute_copy::<T, T>(ref_to_t);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "8b27f3f6ef84b836f710ca1ea5aea2028049e6cdf5241f6da71754015e7de092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b27f3f6ef84b836f710ca1ea5aea2028049e6cdf5241f6da71754015e7de092", kill_on_drop: false }`
[INFO] [stdout] 8b27f3f6ef84b836f710ca1ea5aea2028049e6cdf5241f6da71754015e7de092
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7c30445691e0c73c930525b4ef1eeccb79ff92964349b1812b17802ed1e9a05f
[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" "7c30445691e0c73c930525b4ef1eeccb79ff92964349b1812b17802ed1e9a05f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused return value of `transmute_copy` that must be used
[INFO] [stderr]    --> src/droplist.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     std::mem::transmute_copy::<T, T>(ref_to_t);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `memur` (lib) generated 1 warning
[INFO] [stderr] warning: `memur` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.80s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/memur-a9c9d14e2a1bef52)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test array::array::has_items_when_iterating ... ok
[INFO] [stdout] test arena::arena_tests::value_can_not_be_used_when_arena_goes_out_of_scope ... ok
[INFO] [stdout] test array::array::has_items_when_iterating_items_i16 ... ok
[INFO] [stdout] test dropflag::dropflag ... ok
[INFO] [stdout] test arena::arena_tests::nested_objects_are_dropped_properly ... ok
[INFO] [stdout] test array::array::has_items_when_iterating_items_i8 ... ok
[INFO] [stdout] test list::list_tests::test_collect ... ok
[INFO] [stdout] test array::array::test_collect ... ok
[INFO] [stdout] test droplist::tests::droplist_single ... ok
[INFO] [stdout] test list::list_tests::many_items_test ... ok
[INFO] [stdout] test list::list_tests::simple_test ... ok
[INFO] [stdout] test ustr::ustr_tests::test_str_with_nul ... ok
[INFO] [stdout] test array::array::has_items_when_iterating_items_i16_but_not_when_arena_is_dead ... ok
[INFO] [stdout] test droplist::tests::droplist_chain ... ok
[INFO] [stderr]    Doc-tests memur
[INFO] [stdout] test ustr::ustr_tests::test_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 67) ... ok
[INFO] [stdout] test src/lib.rs - (line 289) ... ok
[INFO] [stdout] test src/lib.rs - (line 182) ... ok
[INFO] [stdout] test src/lib.rs - (line 226) ... ok
[INFO] [stdout] test src/lib.rs - (line 207) ... ok
[INFO] [stdout] test src/lib.rs - (line 263) ... ok
[INFO] [stdout] test src/lib.rs - (line 140) ... ok
[INFO] [stdout] test src/lib.rs - (line 101) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.22s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7c30445691e0c73c930525b4ef1eeccb79ff92964349b1812b17802ed1e9a05f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c30445691e0c73c930525b4ef1eeccb79ff92964349b1812b17802ed1e9a05f", kill_on_drop: false }`
[INFO] [stdout] 7c30445691e0c73c930525b4ef1eeccb79ff92964349b1812b17802ed1e9a05f