[INFO] fetching crate python_comm_macros 0.2.6...
[INFO] testing python_comm_macros-0.2.6 against 1.60.0 for beta-1.61-1
[INFO] extracting crate python_comm_macros 0.2.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate python_comm_macros 0.2.6 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate python_comm_macros 0.2.6
[INFO] finished tweaking crates.io crate python_comm_macros 0.2.6
[INFO] tweaked toml for crates.io crate python_comm_macros 0.2.6 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate python_comm_macros 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] de64c4efbff9e99589cf95a88b60093d66a0c4a30f90d05c630f6e95201b475d
[INFO] running `Command { std: "docker" "start" "-a" "de64c4efbff9e99589cf95a88b60093d66a0c4a30f90d05c630f6e95201b475d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de64c4efbff9e99589cf95a88b60093d66a0c4a30f90d05c630f6e95201b475d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de64c4efbff9e99589cf95a88b60093d66a0c4a30f90d05c630f6e95201b475d", kill_on_drop: false }`
[INFO] [stdout] de64c4efbff9e99589cf95a88b60093d66a0c4a30f90d05c630f6e95201b475d
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--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] 319fbe1ef3b4df19cda2305049f9be0cefed59c9047d6e2522064a9d1aec3282
[INFO] running `Command { std: "docker" "start" "-a" "319fbe1ef3b4df19cda2305049f9be0cefed59c9047d6e2522064a9d1aec3282", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling python_comm_macros v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bin/test.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     &mut |x: i8| x;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let _ = &mut |x: i8| x;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.40s
[INFO] running `Command { std: "docker" "inspect" "319fbe1ef3b4df19cda2305049f9be0cefed59c9047d6e2522064a9d1aec3282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "319fbe1ef3b4df19cda2305049f9be0cefed59c9047d6e2522064a9d1aec3282", kill_on_drop: false }`
[INFO] [stdout] 319fbe1ef3b4df19cda2305049f9be0cefed59c9047d6e2522064a9d1aec3282
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] cd3a458833286e976a17f52f16cbb255bcfcea2db248a55b235dd180d1842dee
[INFO] running `Command { std: "docker" "start" "-a" "cd3a458833286e976a17f52f16cbb255bcfcea2db248a55b235dd180d1842dee", kill_on_drop: false }`
[INFO] [stderr]    Compiling python_comm_macros v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bin/test.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     &mut |x: i8| x;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let _ = &mut |x: i8| x;
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "cd3a458833286e976a17f52f16cbb255bcfcea2db248a55b235dd180d1842dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd3a458833286e976a17f52f16cbb255bcfcea2db248a55b235dd180d1842dee", kill_on_drop: false }`
[INFO] [stdout] cd3a458833286e976a17f52f16cbb255bcfcea2db248a55b235dd180d1842dee
[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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 73f943a583d3bed9cf864a5685dfb3b2210388394290add8216497b8e643d1c0
[INFO] running `Command { std: "docker" "start" "-a" "73f943a583d3bed9cf864a5685dfb3b2210388394290add8216497b8e643d1c0", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/bin/test.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     &mut |x: i8| x;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let _ = &mut |x: i8| x;
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `python_comm_macros` (bin "test" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/python_comm_macros-79711859e11d4e3b)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/test-528f99f8c310e065)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests python_comm_macros
[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] [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" "73f943a583d3bed9cf864a5685dfb3b2210388394290add8216497b8e643d1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f943a583d3bed9cf864a5685dfb3b2210388394290add8216497b8e643d1c0", kill_on_drop: false }`
[INFO] [stdout] 73f943a583d3bed9cf864a5685dfb3b2210388394290add8216497b8e643d1c0