[INFO] fetching crate engine_io_parser 0.2.0...
[INFO] testing engine_io_parser-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate engine_io_parser 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate engine_io_parser 0.2.0 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 engine_io_parser 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate engine_io_parser 0.2.0
[INFO] tweaked toml for crates.io crate engine_io_parser 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 3316f17b6566f11c311765dfb3e505ddd8822d33c69d21a928e60c0743d2c90e
[INFO] running `Command { std: "docker" "start" "-a" "3316f17b6566f11c311765dfb3e505ddd8822d33c69d21a928e60c0743d2c90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3316f17b6566f11c311765dfb3e505ddd8822d33c69d21a928e60c0743d2c90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3316f17b6566f11c311765dfb3e505ddd8822d33c69d21a928e60c0743d2c90e", kill_on_drop: false }`
[INFO] [stdout] 3316f17b6566f11c311765dfb3e505ddd8822d33c69d21a928e60c0743d2c90e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 28c51c8986e3b95f4d18f7f74772193a7e36db7a8101700bc81da2d8c6e86bdc
[INFO] running `Command { std: "docker" "start" "-a" "28c51c8986e3b95f4d18f7f74772193a7e36db7a8101700bc81da2d8c6e86bdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling engine_io_parser v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parsed_str`
[INFO] [stdout]    --> src/binary.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Ok(parsed_str) => Ok((
[INFO] [stdout]     |            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_str`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.10s
[INFO] running `Command { std: "docker" "inspect" "28c51c8986e3b95f4d18f7f74772193a7e36db7a8101700bc81da2d8c6e86bdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28c51c8986e3b95f4d18f7f74772193a7e36db7a8101700bc81da2d8c6e86bdc", kill_on_drop: false }`
[INFO] [stdout] 28c51c8986e3b95f4d18f7f74772193a7e36db7a8101700bc81da2d8c6e86bdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 327e9f8c4a2ee50e6ce08b51fd693d652a6ff675948b8d6a0fd26891e447e99d
[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" "327e9f8c4a2ee50e6ce08b51fd693d652a6ff675948b8d6a0fd26891e447e99d", kill_on_drop: false }`
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling tinytemplate v1.2.0
[INFO] [stdout] warning: unused variable: `parsed_str`
[INFO] [stdout]    --> src/binary.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Ok(parsed_str) => Ok((
[INFO] [stdout]     |            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_str`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling engine_io_parser v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parsed_str`
[INFO] [stdout]    --> src/binary.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |         Ok(parsed_str) => Ok((
[INFO] [stdout]     |            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_str`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/string_test.rs:58:42
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 data: PacketData::Binary(Cow::Owned(vec![b'h', b'e', b'l', b'l', b'o'])),
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/binary_test.rs:60:42
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 data: PacketData::Binary(Cow::Owned(vec![1u8, 2u8, 3u8, 4u8]))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/string_test.rs:62:42
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 data: PacketData::Binary(Cow::Owned(vec![1, 2, 3, 4]))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/string_test.rs:81:42
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 data: PacketData::Binary(Cow::Owned(vec![1, 2, 3, 4]))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/binary_test.rs:78:38
[INFO] [stdout]    |
[INFO] [stdout] 78 |             data: PacketData::Binary(Cow::Owned(vec![16u8, 8u8, 4u8, 2u8])),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> tests/string_test.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 data: PacketData::Binary(Cow::Owned(vec![1, 2, 3, 4]))
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                  found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `engine_io_parser`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> tests/binary_test.rs:89:38
[INFO] [stdout]    |
[INFO] [stdout] 89 |             data: PacketData::Binary(Cow::Owned(vec![0x54, 0x32, 0x18, 0x22, 0x44, 0x58])),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                 found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> tests/binary_test.rs:122:42
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 data: PacketData::Binary(Cow::Owned(vec![1, 2, 3, 4]))
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `bytes::bytes::Bytes`, found enum `Cow`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `bytes::bytes::Bytes`
[INFO] [stdout]                  found enum `Cow<'_, _>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "327e9f8c4a2ee50e6ce08b51fd693d652a6ff675948b8d6a0fd26891e447e99d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "327e9f8c4a2ee50e6ce08b51fd693d652a6ff675948b8d6a0fd26891e447e99d", kill_on_drop: false }`
[INFO] [stdout] 327e9f8c4a2ee50e6ce08b51fd693d652a6ff675948b8d6a0fd26891e447e99d