[INFO] fetching crate cabin-storage 0.1.1...
[INFO] testing cabin-storage-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate cabin-storage 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate cabin-storage 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cabin-storage 0.1.1
[INFO] tweaked toml for crates.io crate cabin-storage 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cabin-storage 0.1.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cabin-storage 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-skiplist v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fc25c70912103860865138d1510fd1b6426057d6126e91e7c966478e3b024ec
[INFO] running `Command { std: "docker" "start" "-a" "4fc25c70912103860865138d1510fd1b6426057d6126e91e7c966478e3b024ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fc25c70912103860865138d1510fd1b6426057d6126e91e7c966478e3b024ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc25c70912103860865138d1510fd1b6426057d6126e91e7c966478e3b024ec", kill_on_drop: false }`
[INFO] [stdout] 4fc25c70912103860865138d1510fd1b6426057d6126e91e7c966478e3b024ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e36d0e707cc09e86df9fe15741ad325686c038b0752a916dfabdd71751e61b88
[INFO] running `Command { std: "docker" "start" "-a" "e36d0e707cc09e86df9fe15741ad325686c038b0752a916dfabdd71751e61b88", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-skiplist v0.1.3
[INFO] [stderr]    Compiling cabin-storage v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MemtableIterator` is never constructed
[INFO] [stdout]  --> src/memtable/iterator.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MemtableIterator<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StorageIterator` is never used
[INFO] [stdout]   --> src/memtable/iterator.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait StorageIterator {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MergedIterator` is never constructed
[INFO] [stdout]  --> src/memtable/merged_iterator.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MergedIterator<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memtable/merged_iterator.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> MergedIterator<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(iterators: &'a mut [MemtableIterator<'a>]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/memtable/table.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Memtable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn iter(&self) -> MemtableIterator<'_> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "e36d0e707cc09e86df9fe15741ad325686c038b0752a916dfabdd71751e61b88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36d0e707cc09e86df9fe15741ad325686c038b0752a916dfabdd71751e61b88", kill_on_drop: false }`
[INFO] [stdout] e36d0e707cc09e86df9fe15741ad325686c038b0752a916dfabdd71751e61b88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d33d12c78519017174e8a32c9997d5d23119103911b46b1cb1a0a7d92cef3fc
[INFO] running `Command { std: "docker" "start" "-a" "6d33d12c78519017174e8a32c9997d5d23119103911b46b1cb1a0a7d92cef3fc", kill_on_drop: false }`
[INFO] [stdout] warning: struct `MemtableIterator` is never constructed
[INFO] [stdout]  --> src/memtable/iterator.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MemtableIterator<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StorageIterator` is never used
[INFO] [stdout]   --> src/memtable/iterator.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait StorageIterator {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MergedIterator` is never constructed
[INFO] [stdout]  --> src/memtable/merged_iterator.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MergedIterator<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memtable/merged_iterator.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> MergedIterator<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(iterators: &'a mut [MemtableIterator<'a>]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/memtable/table.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Memtable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn iter(&self) -> MemtableIterator<'_> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cabin-storage v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> tests/storage.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemtableIterator` is never constructed
[INFO] [stdout]  --> src/memtable/iterator.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MemtableIterator<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `StorageIterator` is never used
[INFO] [stdout]   --> src/memtable/iterator.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait StorageIterator {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MergedIterator` is never constructed
[INFO] [stdout]  --> src/memtable/merged_iterator.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MergedIterator<'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memtable/merged_iterator.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> MergedIterator<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(iterators: &'a mut [MemtableIterator<'a>]) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/memtable/table.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Memtable {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn iter(&self) -> MemtableIterator<'_> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "6d33d12c78519017174e8a32c9997d5d23119103911b46b1cb1a0a7d92cef3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d33d12c78519017174e8a32c9997d5d23119103911b46b1cb1a0a7d92cef3fc", kill_on_drop: false }`
[INFO] [stdout] 6d33d12c78519017174e8a32c9997d5d23119103911b46b1cb1a0a7d92cef3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1a4d84567ac836531e6f3be8b0d1702754f3a43f07ae6018cdf15a82d925cbda
[INFO] running `Command { std: "docker" "start" "-a" "1a4d84567ac836531e6f3be8b0d1702754f3a43f07ae6018cdf15a82d925cbda", kill_on_drop: false }`
[INFO] [stderr] warning: struct `MemtableIterator` is never constructed
[INFO] [stderr]  --> src/memtable/iterator.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct MemtableIterator<'a> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `StorageIterator` is never used
[INFO] [stderr]   --> src/memtable/iterator.rs:12:11
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub trait StorageIterator {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MergedIterator` is never constructed
[INFO] [stderr]  --> src/memtable/merged_iterator.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct MergedIterator<'a> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/memtable/merged_iterator.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<'a> MergedIterator<'a> {
[INFO] [stderr]    | --------------------------- associated function in this implementation
[INFO] [stderr] 12 |     pub fn new(iterators: &'a mut [MemtableIterator<'a>]) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `iter` is never used
[INFO] [stderr]   --> src/memtable/table.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Memtable {
[INFO] [stderr]    | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub fn iter(&self) -> MemtableIterator<'_> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `cabin-storage` (lib) generated 5 warnings
[INFO] [stderr] warning: `cabin-storage` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]  --> tests/storage.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::sync::Arc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cabin-storage` (test "storage") generated 1 warning (run `cargo fix --test "storage" -p cabin-storage` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cabin_storage-a77a2d55ca64c88a)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test memtable::table::tests::can_put_and_get_items ... ok
[INFO] [stdout] test tests::filled_up_memtables_are_frozen ... ok
[INFO] [stdout] test memtable::table::tests::memtable_grows_in_size_after_put ... ok
[INFO] [stdout] test memtable::table::tests::key_not_found - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/storage.rs (/opt/rustwide/target/debug/deps/storage-c89a3e260faba5b9)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_delete_non_existent_key ... ignored
[INFO] [stdout] test can_read_frozen_memtable ... ok
[INFO] [stdout] test get_invalid_key - should panic ... ok
[INFO] [stdout] test get_returns_latest_entry ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cabin_storage
[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" "1a4d84567ac836531e6f3be8b0d1702754f3a43f07ae6018cdf15a82d925cbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4d84567ac836531e6f3be8b0d1702754f3a43f07ae6018cdf15a82d925cbda", kill_on_drop: false }`
[INFO] [stdout] 1a4d84567ac836531e6f3be8b0d1702754f3a43f07ae6018cdf15a82d925cbda