[INFO] fetching crate libmodbus 1.0.1...
[INFO] testing libmodbus-1.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate libmodbus 1.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libmodbus 1.0.1 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 libmodbus 1.0.1
[INFO] finished tweaking crates.io crate libmodbus 1.0.1
[INFO] tweaked toml for crates.io crate libmodbus 1.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate libmodbus 1.0.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 31fb01f0450606b06a01ac298c8a2be391ccfc0ed048bb39de2e2a75183e4d4c
[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" "31fb01f0450606b06a01ac298c8a2be391ccfc0ed048bb39de2e2a75183e4d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31fb01f0450606b06a01ac298c8a2be391ccfc0ed048bb39de2e2a75183e4d4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31fb01f0450606b06a01ac298c8a2be391ccfc0ed048bb39de2e2a75183e4d4c", kill_on_drop: false }`
[INFO] [stdout] 31fb01f0450606b06a01ac298c8a2be391ccfc0ed048bb39de2e2a75183e4d4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 2466ade589d41a0b84e47771be8a350b696fc8dc22f7875134b13cd83026742c
[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" "2466ade589d41a0b84e47771be8a350b696fc8dc22f7875134b13cd83026742c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling clang-sys v1.0.1
[INFO] [stderr]    Compiling libloading v0.6.5
[INFO] [stderr]    Compiling standback v0.2.11
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling libmodbus-sys v1.0.0
[INFO] [stderr]    Compiling libmodbus v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.84s
[INFO] running `Command { std: "docker" "inspect" "2466ade589d41a0b84e47771be8a350b696fc8dc22f7875134b13cd83026742c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2466ade589d41a0b84e47771be8a350b696fc8dc22f7875134b13cd83026742c", kill_on_drop: false }`
[INFO] [stdout] 2466ade589d41a0b84e47771be8a350b696fc8dc22f7875134b13cd83026742c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 3b3e5efd7de9036f5d8b504e02683ccedad7aed0c152a9285e50ce06ca328acb
[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" "3b3e5efd7de9036f5d8b504e02683ccedad7aed0c152a9285e50ce06ca328acb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libmodbus v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.47s
[INFO] running `Command { std: "docker" "inspect" "3b3e5efd7de9036f5d8b504e02683ccedad7aed0c152a9285e50ce06ca328acb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b3e5efd7de9036f5d8b504e02683ccedad7aed0c152a9285e50ce06ca328acb", kill_on_drop: false }`
[INFO] [stdout] 3b3e5efd7de9036f5d8b504e02683ccedad7aed0c152a9285e50ce06ca328acb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 955340b6eb77f35832f2ee7ba43b588154cb2f803800374e500dd3feb998d03a
[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" "955340b6eb77f35832f2ee7ba43b588154cb2f803800374e500dd3feb998d03a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/libmodbus-982f4b3b60920ca8
[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]      Running /opt/rustwide/target/debug/deps/test_modbus-0b4a588bd0a70f6b
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test close ... ignored
[INFO] [stdout] test flush ... ignored
[INFO] [stdout] test free ... ignored
[INFO] [stdout] test reply_exception ... ignored
[INFO] [stdout] test connect ... ok
[INFO] [stdout] test set_response_timeout ... ok
[INFO] [stdout] test set_slave ... ok
[INFO] [stdout] test set_socket ... ok
[INFO] [stdout] test timeout_default ... ok
[INFO] [stdout] test timeout_new ... ok
[INFO] [stdout] test timeout_new_sec ... ok
[INFO] [stdout] test timeout_new_usec ... ok
[INFO] [stdout] test set_error_recovery ... ok
[INFO] [stdout] test set_debug ... ok
[INFO] [stdout] test set_byte_timeout ... ok
[INFO] [stdout] test get_response_timeout ... ok
[INFO] [stdout] test get_header_length ... ok
[INFO] [stdout] test get_byte_timeout ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_client-add3abcd236df0ac
[INFO] [stdout] test get_socket ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 4 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test report_slave_id ... ok
[INFO] [stdout] test send_raw_request ... ok
[INFO] [stdout] test write_bit ... ok
[INFO] [stdout] test read_registers ... ok
[INFO] [stdout] test read_bits ... ok
[INFO] [stdout] test write_register ... ok
[INFO] [stdout] test receive_confirmation ... ok
[INFO] [stdout] test write_bits ... ok
[INFO] [stdout] test read_input_registers ... ok
[INFO] [stdout] test write_and_read_registers ... ok
[INFO] [stdout] test write_registers ... ok
[INFO] [stdout] test read_input_bits ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_mapping-01631952143f1251
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test free ... ignored
[INFO] [stdout] test get_bits ... ok
[INFO] [stdout] test get_bits_mut ... ok
[INFO] [stdout] test get_input_bit ... ok
[INFO] [stdout] test get_input_registers ... ok
[INFO] [stdout] test get_registers ... ok
[INFO] [stdout] test get_registers_mut ... ok
[INFO] [stdout] test new ... ok
[INFO] [stdout] test new_start_address ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_rtu-40cefe87625163e9
[INFO] [stdout] test get_input_registers_mut ... ok
[INFO] [stdout] test get_input_bits_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test rtu_get_rts ... ignored
[INFO] [stdout] test rtu_get_rts_delay ... ignored
[INFO] [stdout] test rtu_get_serial_mode ... ignored
[INFO] [stdout] test rtu_set_custom_rts ... ignored
[INFO] [stdout] test rtu_set_rts ... ignored
[INFO] [stdout] test rtu_set_rts_delay ... ignored
[INFO] [stdout] test rtu_set_serial_mode ... ignored
[INFO] [stdout] test new_rtu_context ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 7 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_server-708a871f4398e637
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test receive ... ignored
[INFO] [stdout] test reply ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_tcp-ab99a5d2fee3fb62
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tcp_accept ... ignored
[INFO] [stdout] test tcp_listen ... ok
[INFO] [stdout] test new_tcp ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_modbus_tcp_pi-9a6bfc4670eff939
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tcp_pi_accept ... ignored
[INFO] [stdout] test tcp_pi_listen ... ignored
[INFO] [stdout] test new_tcp_pi ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libmodbus
[INFO] [stdout] 
[INFO] [stdout] running 71 tests
[INFO] [stdout] test src/modbus.rs - modbus::Modbus::reply_exception (line 741) ... ok
[INFO] [stdout] test src/modbus.rs - modbus::Modbus::flush (line 273) ... ok
[INFO] [stdout] test src/modbus.rs - modbus::Modbus::free (line 805) ... ok
[INFO] [stdout] test src/modbus.rs - modbus::Modbus::set_error_recovery (line 602) ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --test /opt/rustwide/workdir/src/lib.rs --crate-name libmodbus -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps -L native=/opt/rustwide/target/debug/build/libmodbus-sys-01ef748facc77011/out/build --extern clap=/opt/rustwide/target/debug/deps/libclap-9894525159e79a5e.rlib --extern libc=/opt/rustwide/target/debug/deps/liblibc-5a14dbf7a89e1173.rlib --extern libmodbus=/opt/rustwide/target/debug/deps/liblibmodbus-85d95637a834f16a.rlib --extern libmodbus_sys=/opt/rustwide/target/debug/deps/liblibmodbus_sys-3348e256bec992da.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-f3ce72d935c66aa4.rlib --extern time=/opt/rustwide/target/debug/deps/libtime-8149229ff487edfb.rlib -C embed-bitcode=no` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "955340b6eb77f35832f2ee7ba43b588154cb2f803800374e500dd3feb998d03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "955340b6eb77f35832f2ee7ba43b588154cb2f803800374e500dd3feb998d03a", kill_on_drop: false }`
[INFO] [stdout] 955340b6eb77f35832f2ee7ba43b588154cb2f803800374e500dd3feb998d03a