[INFO] fetching crate serde-rlp 0.1.4...
[INFO] testing serde-rlp-0.1.4 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate serde-rlp 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde-rlp 0.1.4 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-rlp 0.1.4
[INFO] finished tweaking crates.io crate serde-rlp 0.1.4
[INFO] tweaked toml for crates.io crate serde-rlp 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65f6fd4d3af104adfcf1eec94e3b2458688b08419e89bc0ff3398ebfab839f5e
[INFO] running `Command { std: "docker" "start" "-a" "65f6fd4d3af104adfcf1eec94e3b2458688b08419e89bc0ff3398ebfab839f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65f6fd4d3af104adfcf1eec94e3b2458688b08419e89bc0ff3398ebfab839f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f6fd4d3af104adfcf1eec94e3b2458688b08419e89bc0ff3398ebfab839f5e", kill_on_drop: false }`
[INFO] [stdout] 65f6fd4d3af104adfcf1eec94e3b2458688b08419e89bc0ff3398ebfab839f5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9141cc36f002e7830a24c17980a18203728f01cd96cc2bf33d2cce98112573a2
[INFO] running `Command { std: "docker" "start" "-a" "9141cc36f002e7830a24c17980a18203728f01cd96cc2bf33d2cce98112573a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling serde-rlp v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:43:29
[INFO] [stdout]    |
[INFO] [stdout] 43 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_bytes`
[INFO] [stdout]    --> src/de.rs:429:4
[INFO] [stdout]     |
[INFO] [stdout] 429 | fn get_bytes(b: &str) -> Option<Vec<u8>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.35s
[INFO] running `Command { std: "docker" "inspect" "9141cc36f002e7830a24c17980a18203728f01cd96cc2bf33d2cce98112573a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9141cc36f002e7830a24c17980a18203728f01cd96cc2bf33d2cce98112573a2", kill_on_drop: false }`
[INFO] [stdout] 9141cc36f002e7830a24c17980a18203728f01cd96cc2bf33d2cce98112573a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06917bbc9819e6df172583499b1faf87cd8ae645a89b6637776ac15bcb7da3d9
[INFO] running `Command { std: "docker" "start" "-a" "06917bbc9819e6df172583499b1faf87cd8ae645a89b6637776ac15bcb7da3d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:43:29
[INFO] [stdout]    |
[INFO] [stdout] 43 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_bytes`
[INFO] [stdout]    --> src/de.rs:429:4
[INFO] [stdout]     |
[INFO] [stdout] 429 | fn get_bytes(b: &str) -> Option<Vec<u8>> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde-rlp v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:43:29
[INFO] [stdout]    |
[INFO] [stdout] 43 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.18s
[INFO] running `Command { std: "docker" "inspect" "06917bbc9819e6df172583499b1faf87cd8ae645a89b6637776ac15bcb7da3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06917bbc9819e6df172583499b1faf87cd8ae645a89b6637776ac15bcb7da3d9", kill_on_drop: false }`
[INFO] [stdout] 06917bbc9819e6df172583499b1faf87cd8ae645a89b6637776ac15bcb7da3d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 226d2a2c531ceb16d3ef65abe7127ca757af0c484be16c3fd4fcfb0a083af51e
[INFO] running `Command { std: "docker" "start" "-a" "226d2a2c531ceb16d3ef65abe7127ca757af0c484be16c3fd4fcfb0a083af51e", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_bytes`
[INFO] [stderr]    --> src/de.rs:429:4
[INFO] [stderr]     |
[INFO] [stderr] 429 | fn get_bytes(b: &str) -> Option<Vec<u8>> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 |         formatter.write_str(std::error::Error::description(self))
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_rlp-3d28083f3edbb8c9)
[INFO] [stdout] running 39 tests
[INFO] [stdout] test de::deserialize_longer_string ... ok
[INFO] [stdout] test de::unsigned_eth_transaction ... ok
[INFO] [stdout] test rlp::decode_empty_byte_slice ... ok
[INFO] [stdout] test rlp::decode_short_array ... ok
[INFO] [stdout] test de::deserialize_three_levels ... ok
[INFO] [stdout] test rlp::test_encode_length_big ... ok
[INFO] [stdout] test de::deserialize_short_array ... ok
[INFO] [stdout] test rlp::to_integer_with_multiple_bytes ... ok
[INFO] [stdout] test rlp::to_integer_with_single_byte ... ok
[INFO] [stdout] test ser::test_emptystring ... ok
[INFO] [stdout] test ser::test_array ... ok
[INFO] [stdout] test ser::test_integer_1024 ... ok
[INFO] [stdout] test ser::test_integer_1024_u32 ... ok
[INFO] [stdout] test ser::test_nested_shortlist ... ok
[INFO] [stdout] test ser::test_shortlist ... ok
[INFO] [stdout] test ser::test_shortstring ... ok
[INFO] [stdout] test ser::test_wrapped_shortlist ... ok
[INFO] [stdout] test ser::test_shortlist_as_tuple ... ok
[INFO] [stdout] test de::deserialize_short_string ... ok
[INFO] [stdout] test ser::test_integer_15 ... ok
[INFO] [stdout] test ser::test_kv ... ok
[INFO] [stdout] test de::lorem_ipsum ... ok
[INFO] [stdout] test ser::test_long_string ... ok
[INFO] [stdout] test rlp::decode_single_byte ... ok
[INFO] [stdout] test rlp::to_integer_with_empty_buffer ... ok
[INFO] [stdout] test rlp::decode_u32_max ... ok
[INFO] [stdout] test rlp::decode_short_string ... ok
[INFO] [stdout] test ser::test_integer_0 ... ok
[INFO] [stdout] test rlp::decode_u64_max ... ok
[INFO] [stdout] test de::deserialize_short_array_into_tuple ... ok
[INFO] [stdout] test rlp::test_encode_length_small ... ok
[INFO] [stdout] test rlp::test_to_binary_null ... ok
[INFO] [stdout] test de::invalid_complex ... ok
[INFO] [stdout] test de::deserialize_set_representation_of_three ... ok
[INFO] [stdout] test rlp::test_encode_number ... ok
[INFO] [stdout] test rlp::test_to_binary_non_null ... ok
[INFO] [stdout] test de::deserialize_nested_sequence_of_string_seq ... ok
[INFO] [stdout] test rlp::test_encode_length_of_wrong_size - should panic ... ok
[INFO] [stdout] test de::simple_invalid - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/structures.rs (/opt/rustwide/target/debug/deps/structures-f654af47de479a15)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test serialize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde-rlp
[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" "226d2a2c531ceb16d3ef65abe7127ca757af0c484be16c3fd4fcfb0a083af51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226d2a2c531ceb16d3ef65abe7127ca757af0c484be16c3fd4fcfb0a083af51e", kill_on_drop: false }`
[INFO] [stdout] 226d2a2c531ceb16d3ef65abe7127ca757af0c484be16c3fd4fcfb0a083af51e