[INFO] fetching crate atom 0.3.6...
[INFO] testing atom-0.3.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate atom 0.3.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate atom 0.3.6 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atom 0.3.6
[INFO] finished tweaking crates.io crate atom 0.3.6
[INFO] tweaked toml for crates.io crate atom 0.3.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate atom 0.3.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 41ab7d44c2559e1cf76e9f0d294de72771dd0b49507bb26bd1a08383a4b6e74c
[INFO] running `Command { std: "docker" "start" "-a" "41ab7d44c2559e1cf76e9f0d294de72771dd0b49507bb26bd1a08383a4b6e74c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41ab7d44c2559e1cf76e9f0d294de72771dd0b49507bb26bd1a08383a4b6e74c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ab7d44c2559e1cf76e9f0d294de72771dd0b49507bb26bd1a08383a4b6e74c", kill_on_drop: false }`
[INFO] [stdout] 41ab7d44c2559e1cf76e9f0d294de72771dd0b49507bb26bd1a08383a4b6e74c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21f2c6b1ed30732f0d67722050bbf38b4530fae494067a011633aeddfe0e87df
[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" "21f2c6b1ed30732f0d67722050bbf38b4530fae494067a011633aeddfe0e87df", kill_on_drop: false }`
[INFO] [stderr]    Compiling atom v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "21f2c6b1ed30732f0d67722050bbf38b4530fae494067a011633aeddfe0e87df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f2c6b1ed30732f0d67722050bbf38b4530fae494067a011633aeddfe0e87df", kill_on_drop: false }`
[INFO] [stdout] 21f2c6b1ed30732f0d67722050bbf38b4530fae494067a011633aeddfe0e87df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] c3fa447c074b61aa1acf59f3b3311d723617a60272581f90cb6e5072e6fce7af
[INFO] running `Command { std: "docker" "start" "-a" "c3fa447c074b61aa1acf59f3b3311d723617a60272581f90cb6e5072e6fce7af", kill_on_drop: false }`
[INFO] [stderr]    Compiling atom v0.3.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> examples/fifo.rs:43:14
[INFO] [stdout]    |
[INFO] [stdout] 43 |     for _ in (0..THREADS) {
[INFO] [stdout]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> examples/fifo.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |             for _ in (0..10_000) {
[INFO] [stdout]    |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `Command { std: "docker" "inspect" "c3fa447c074b61aa1acf59f3b3311d723617a60272581f90cb6e5072e6fce7af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fa447c074b61aa1acf59f3b3311d723617a60272581f90cb6e5072e6fce7af", kill_on_drop: false }`
[INFO] [stdout] c3fa447c074b61aa1acf59f3b3311d723617a60272581f90cb6e5072e6fce7af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf2adb4f1e1041997a2a94b50a887d62e6485742c45e9b07109584cbc153c244
[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" "cf2adb4f1e1041997a2a94b50a887d62e6485742c45e9b07109584cbc153c244", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> examples/fifo.rs:43:14
[INFO] [stderr]    |
[INFO] [stderr] 43 |     for _ in (0..THREADS) {
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> examples/fifo.rs:49:22
[INFO] [stderr]    |
[INFO] [stderr] 49 |             for _ in (0..10_000) {
[INFO] [stderr]    |                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/atom-8d9467da3f30127f
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/atom-5eb16a5a09150c9b
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stderr]    Doc-tests atom
[INFO] [stdout] test get_arc ... ok
[INFO] [stdout] test ensure_drop_arc ... ok
[INFO] [stdout] test take ... ok
[INFO] [stdout] test set_if_none ... ok
[INFO] [stdout] test swap ... ok
[INFO] [stdout] test lifo ... ok
[INFO] [stdout] test ensure_drop ... ok
[INFO] [stdout] test get ... ok
[INFO] [stdout] test lifo_drop ... ok
[INFO] [stdout] test ensure_send ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cf2adb4f1e1041997a2a94b50a887d62e6485742c45e9b07109584cbc153c244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf2adb4f1e1041997a2a94b50a887d62e6485742c45e9b07109584cbc153c244", kill_on_drop: false }`
[INFO] [stdout] cf2adb4f1e1041997a2a94b50a887d62e6485742c45e9b07109584cbc153c244