[INFO] fetching crate mines 0.2.1...
[INFO] testing mines-0.2.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate mines 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mines 0.2.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mines 0.2.1
[INFO] finished tweaking crates.io crate mines 0.2.1
[INFO] tweaked toml for crates.io crate mines 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f72b26be3aa214964156b15ffd5643957de07af991cfe650381e76450c529734
[INFO] running `"docker" "start" "-a" "f72b26be3aa214964156b15ffd5643957de07af991cfe650381e76450c529734"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling mines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the type `&Void` does not permit zero-initialization
[INFO] [stderr]   --> src/lib.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let v: &Void = mem::transmute(0usize);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this code causes undefined behavior when executed
[INFO] [stderr]    |                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]    = note: references must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "f72b26be3aa214964156b15ffd5643957de07af991cfe650381e76450c529734"`
[INFO] running `"docker" "rm" "-f" "f72b26be3aa214964156b15ffd5643957de07af991cfe650381e76450c529734"`
[INFO] [stdout] f72b26be3aa214964156b15ffd5643957de07af991cfe650381e76450c529734
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 176a0816c35b6b4bba8c95b8425b82750ef8f817e67dc930a6749ea5edbee773
[INFO] running `"docker" "start" "-a" "176a0816c35b6b4bba8c95b8425b82750ef8f817e67dc930a6749ea5edbee773"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling mines v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the type `&Void` does not permit zero-initialization
[INFO] [stderr]   --> src/lib.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let v: &Void = mem::transmute(0usize);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this code causes undefined behavior when executed
[INFO] [stderr]    |                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]    = note: references must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the type `&Void` does not permit zero-initialization
[INFO] [stderr]   --> src/lib.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let v: &Void = mem::transmute(0usize);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this code causes undefined behavior when executed
[INFO] [stderr]    |                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]    = note: references must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "176a0816c35b6b4bba8c95b8425b82750ef8f817e67dc930a6749ea5edbee773"`
[INFO] running `"docker" "rm" "-f" "176a0816c35b6b4bba8c95b8425b82750ef8f817e67dc930a6749ea5edbee773"`
[INFO] [stdout] 176a0816c35b6b4bba8c95b8425b82750ef8f817e67dc930a6749ea5edbee773
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 412cbb88035052f3c3bb947ff56b3363a4ff402e22655b0c14a296d3b61c2998
[INFO] running `"docker" "start" "-a" "412cbb88035052f3c3bb947ff56b3363a4ff402e22655b0c14a296d3b61c2998"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: the type `&Void` does not permit zero-initialization
[INFO] [stderr]   --> src/lib.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let v: &Void = mem::transmute(0usize);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this code causes undefined behavior when executed
[INFO] [stderr]    |                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]    = note: references must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the type `&Void` does not permit zero-initialization
[INFO] [stderr]   --> src/lib.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let v: &Void = mem::transmute(0usize);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this code causes undefined behavior when executed
[INFO] [stderr]    |                    help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]    = note: references must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mines-1d81514bf0495925
[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] [stderr]    Doc-tests mines
[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 `"docker" "inspect" "412cbb88035052f3c3bb947ff56b3363a4ff402e22655b0c14a296d3b61c2998"`
[INFO] running `"docker" "rm" "-f" "412cbb88035052f3c3bb947ff56b3363a4ff402e22655b0c14a296d3b61c2998"`
[INFO] [stdout] 412cbb88035052f3c3bb947ff56b3363a4ff402e22655b0c14a296d3b61c2998