[INFO] fetching crate protocol 3.1.7...
[INFO] testing protocol-3.1.7 against 1.49.0 for beta-1.50-1
[INFO] extracting crate protocol 3.1.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate protocol 3.1.7 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 protocol 3.1.7
[INFO] removed 6 missing examples
[INFO] finished tweaking crates.io crate protocol 3.1.7
[INFO] tweaked toml for crates.io crate protocol 3.1.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate protocol 3.1.7 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 1bc42789381920a97ac34b917eefd15840a44d8127b3fdb7aedc25534fe0c6e0
[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" "1bc42789381920a97ac34b917eefd15840a44d8127b3fdb7aedc25534fe0c6e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bc42789381920a97ac34b917eefd15840a44d8127b3fdb7aedc25534fe0c6e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc42789381920a97ac34b917eefd15840a44d8127b3fdb7aedc25534fe0c6e0", kill_on_drop: false }`
[INFO] [stdout] 1bc42789381920a97ac34b917eefd15840a44d8127b3fdb7aedc25534fe0c6e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] abc57d631cf2de327647adb27b6b54f40ff720820ff5837eef99a5dd66dd45a6
[INFO] running `Command { std: "docker" "start" "-a" "abc57d631cf2de327647adb27b6b54f40ff720820ff5837eef99a5dd66dd45a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling protocol v3.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.04s
[INFO] running `Command { std: "docker" "inspect" "abc57d631cf2de327647adb27b6b54f40ff720820ff5837eef99a5dd66dd45a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc57d631cf2de327647adb27b6b54f40ff720820ff5837eef99a5dd66dd45a6", kill_on_drop: false }`
[INFO] [stdout] abc57d631cf2de327647adb27b6b54f40ff720820ff5837eef99a5dd66dd45a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7223db410eecf2cb0b90892007bebda721820bcf607b8e946786c6c626ca21c7
[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" "7223db410eecf2cb0b90892007bebda721820bcf607b8e946786c6c626ca21c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling protocol-derive v3.1.7
[INFO] [stderr]    Compiling protocol v3.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:41:20
[INFO] [stdout]    |
[INFO] [stdout] 41 |         assert_eq!(RotateBytes::ROT13.encode_data(vec![0, 1, 2, 3, 4]).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |         assert_eq!(RotateBytes::ROT13.decode_data(vec![13, 14, 15, 16, 17]).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:53:51
[INFO] [stdout]    |
[INFO] [stdout] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.26s
[INFO] running `Command { std: "docker" "inspect" "7223db410eecf2cb0b90892007bebda721820bcf607b8e946786c6c626ca21c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7223db410eecf2cb0b90892007bebda721820bcf607b8e946786c6c626ca21c7", kill_on_drop: false }`
[INFO] [stdout] 7223db410eecf2cb0b90892007bebda721820bcf607b8e946786c6c626ca21c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ea28f4175b4a914cef1eedbe96c3f61438132b22187efeeb6faa66829a9c3446
[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" "ea28f4175b4a914cef1eedbe96c3f61438132b22187efeeb6faa66829a9c3446", kill_on_drop: false }`
[INFO] [stderr] warning: taking a mutable reference to a `const` item
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:41:20
[INFO] [stderr]    |
[INFO] [stderr] 41 |         assert_eq!(RotateBytes::ROT13.encode_data(vec![0, 1, 2, 3, 4]).unwrap(),
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stderr]    = note: each usage of a `const` item creates a new temporary
[INFO] [stderr]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stderr] note: `const` item defined here
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: taking a mutable reference to a `const` item
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:47:20
[INFO] [stderr]    |
[INFO] [stderr] 47 |         assert_eq!(RotateBytes::ROT13.decode_data(vec![13, 14, 15, 16, 17]).unwrap(),
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: each usage of a `const` item creates a new temporary
[INFO] [stderr]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stderr] note: `const` item defined here
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: taking a mutable reference to a `const` item
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:53:20
[INFO] [stderr]    |
[INFO] [stderr] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: each usage of a `const` item creates a new temporary
[INFO] [stderr]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stderr] note: `const` item defined here
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: taking a mutable reference to a `const` item
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:53:51
[INFO] [stderr]    |
[INFO] [stderr] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: each usage of a `const` item creates a new temporary
[INFO] [stderr]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stderr] note: `const` item defined here
[INFO] [stderr]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/protocol-d86a124c25ac8f25
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test logic::aligned::test::alignment_calculations::test_align_to_3_with_size_2 ... ok
[INFO] [stdout] test logic::aligned::test::alignment_calculations::test_align_to_4_with_size_2 ... ok
[INFO] [stdout] test logic::aligned::test::alignment_calculations::test_aligning_when_none_needed ... ok
[INFO] [stdout] test types::array::test::can_read_array ... ok
[INFO] [stdout] test logic::aligned::test::alignment_calculations::test_align_to_4_with_size_97 ... ok
[INFO] [stdout] test types::array::test::can_write_array ... ok
[INFO] [stdout] test types::collections::list::btree_set::test::can_be_written_and_read_back_correctly ... ok
[INFO] [stdout] test logic::aligned::test::alignment_calculations::test_align_to_3_with_size_5 ... ok
[INFO] [stdout] test wire::middleware::pipeline::test::successfully_passes_data_through_the_pipeline ... ok
[INFO] [stdout] test types::cstring::test::can_write_cstring ... ok
[INFO] [stdout] test wire::stream::transport::simple::test::serialises_the_data_with_32bit_length_prefix ... ok
[INFO] [stdout] test wire::middleware::rotate_bytes::test::bytes_decoded_correctly ... ok
[INFO] [stdout] test types::collections::list::hash_set::test::can_be_written_and_read_back_correctly ... ok
[INFO] [stdout] test wire::middleware::rotate_bytes::test::bytes_read_back_correctly ... ok
[INFO] [stdout] test wire::middleware::rotate_bytes::test::bytes_encoded_correctly ... ok
[INFO] [stdout] test types::collections::list::vec_deque::test::can_be_written_and_read_back_correctly ... ok
[INFO] [stdout] test types::collections::list::linked_list::test::can_be_written_and_read_back_correctly ... ok
[INFO] [stdout] test types::cstring::test::can_read_cstring ... ok
[INFO] [stdout] test wire::stream::transport::simple::test::successfully_deserializes_data_with_32bit_length_prefix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests protocol
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/attributes/mod.rs - attributes (line 59) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] test src/attributes/mod.rs - attributes (line 5) ... ok
[INFO] [stdout] test src/attributes/mod.rs - attributes (line 94) ... ok
[INFO] [stdout] test src/attributes/mod.rs - attributes (line 36) ... ok
[INFO] [stdout] test src/lib.rs - (line 131) ... ok
[INFO] [stdout] test src/lib.rs - (line 105) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/wire/reader.rs - wire::reader::Reader (line 23) ... ok
[INFO] [stdout] test src/logic/aligned.rs - logic::aligned::Aligned (line 25) ... ok
[INFO] [stdout] test src/high_level.rs - high_level::HighLevel (line 13) ... ok
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ea28f4175b4a914cef1eedbe96c3f61438132b22187efeeb6faa66829a9c3446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea28f4175b4a914cef1eedbe96c3f61438132b22187efeeb6faa66829a9c3446", kill_on_drop: false }`
[INFO] [stdout] ea28f4175b4a914cef1eedbe96c3f61438132b22187efeeb6faa66829a9c3446