[INFO] fetching crate serde_syn 0.1.0...
[INFO] testing serde_syn-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde_syn 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde_syn 0.1.0 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 serde_syn 0.1.0
[INFO] finished tweaking crates.io crate serde_syn 0.1.0
[INFO] tweaked toml for crates.io crate serde_syn 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate serde_syn 0.1.0 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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] b43c63183dafb3b370bf371935cdc305280da66b22f720c1457057d857ae5074
[INFO] running `Command { std: "docker" "start" "-a" "b43c63183dafb3b370bf371935cdc305280da66b22f720c1457057d857ae5074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b43c63183dafb3b370bf371935cdc305280da66b22f720c1457057d857ae5074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43c63183dafb3b370bf371935cdc305280da66b22f720c1457057d857ae5074", kill_on_drop: false }`
[INFO] [stdout] b43c63183dafb3b370bf371935cdc305280da66b22f720c1457057d857ae5074
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f28c896cf7786752194843fb4e9a94973ce2fbd923f30eb08f4d4f7260634c3
[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" "8f28c896cf7786752194843fb4e9a94973ce2fbd923f30eb08f4d4f7260634c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling syn v1.0.4
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_syn v0.1.0 (/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:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Error::Syn(e) => e.description(),
[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 dev [unoptimized + debuginfo] target(s) in 14.50s
[INFO] running `Command { std: "docker" "inspect" "8f28c896cf7786752194843fb4e9a94973ce2fbd923f30eb08f4d4f7260634c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f28c896cf7786752194843fb4e9a94973ce2fbd923f30eb08f4d4f7260634c3", kill_on_drop: false }`
[INFO] [stdout] 8f28c896cf7786752194843fb4e9a94973ce2fbd923f30eb08f4d4f7260634c3
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 4b7d894ea0d001140d554f8f14c8f8e7a5b31ba71b5af2c6ec2181c43b52630a
[INFO] running `Command { std: "docker" "start" "-a" "4b7d894ea0d001140d554f8f14c8f8e7a5b31ba71b5af2c6ec2181c43b52630a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_bytes v0.11.2
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Error::Syn(e) => e.description(),
[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]    Compiling serde_syn v0.1.0 (/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:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |             Error::Syn(e) => e.description(),
[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 16.78s
[INFO] running `Command { std: "docker" "inspect" "4b7d894ea0d001140d554f8f14c8f8e7a5b31ba71b5af2c6ec2181c43b52630a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b7d894ea0d001140d554f8f14c8f8e7a5b31ba71b5af2c6ec2181c43b52630a", kill_on_drop: false }`
[INFO] [stdout] 4b7d894ea0d001140d554f8f14c8f8e7a5b31ba71b5af2c6ec2181c43b52630a
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b0e2a9af15c3b0cb05611f6800cabf484056e7344eacbc663230119fa8f35bb
[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" "0b0e2a9af15c3b0cb05611f6800cabf484056e7344eacbc663230119fa8f35bb", 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:74:32
[INFO] [stderr]    |
[INFO] [stderr] 74 |             Error::Syn(e) => e.description(),
[INFO] [stderr]    |                                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning 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:74:32
[INFO] [stderr]    |
[INFO] [stderr] 74 |             Error::Syn(e) => e.description(),
[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 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_syn-d42bd5febbfb44c1
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/maps-e8dcd8ee5cd86f75
[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] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test jsonlike ... ok
[INFO] [stdout] test matchlike ... ok
[INFO] [stdout] test structlike ... ok
[INFO] [stdout] test named_enum ... ok
[INFO] [stdout] test unnamed_enum ... ok
[INFO] [stdout] test tuple_list ... ok
[INFO] [stdout] test identifiers ... ok
[INFO] [stdout] test ident_errors ... ok
[INFO] [stdout] test attriblike ... ok
[INFO] [stdout] test utils::assert_nparse_can_fail ... ok
[INFO] [stdout] test utils::assert_parse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test bool ... ok
[INFO] [stdout] test char ... ok
[INFO] [stdout] test overflow_error ... ok
[INFO] [stdout] test int ... ok
[INFO] [stdout] test neg_overflow_error ... ok
[INFO] [stdout] test suffixed_float ... ok
[INFO] [stdout] test suffixed_uint ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/primatives-8041f2d47315e3a5
[INFO] [stdout] test float ... ok
[INFO] [stdout] test mismatched_tag_error ... ok
[INFO] [stdout] test uint ... ok
[INFO] [stdout] test neg_to_uint_error ... ok
[INFO] [stdout] test suffixed_int ... ok
[INFO] [stdout] test neg_float ... ok
[INFO] [stdout] test utils::assert_nparse_can_fail ... ok
[INFO] [stdout] test utils::assert_parse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/seq-80ef8e86b87efdb4
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test empty_array ... ok
[INFO] [stdout] test trailing_comma ... ok
[INFO] [stdout] test tuple_struct ... ok
[INFO] [stdout] test string_array ... ok
[INFO] [stdout] test tuple ... ok
[INFO] [stdout] test tuple_enum ... ok
[INFO] [stdout] test tuple_struct_errors ... ok
[INFO] [stdout] test utils::assert_nparse_can_fail ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/simple_structs-50d60dc3e7dda615
[INFO] [stdout] test utils::assert_parse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test option_none ... ok
[INFO] [stdout] test option_name_error ... ok
[INFO] [stdout] test option_unit ... ok
[INFO] [stdout] test none_extra_tokens_error ... ok
[INFO] [stdout] test bare_some_error ... ok
[INFO] [stdout] test newtype_struct ... ok
[INFO] [stdout] test newtype_enum ... ok
[INFO] [stdout] test nested_option ... ok
[INFO] [stdout] test unit_nontuple_error ... ok
[INFO] [stdout] test unit_struct ... ok
[INFO] [stdout] test unit ... ok
[INFO] [stdout] test prefixed_option ... ok
[INFO] [stdout] test unit_struct_errors ... ok
[INFO] [stdout] test option_some ... ok
[INFO] [stdout] test unit_enum ... ok
[INFO] [stdout] test some_extra_tokens_error ... ok
[INFO] [stdout] test newtype_struct_errors ... ok
[INFO] [stdout] test unit_nonempty_error ... ok
[INFO] [stdout] test utils::assert_nparse_can_fail ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/strings-69a9aea4d05db2c5
[INFO] [stdout] test utils::assert_parse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test array_type_errors ... ok
[INFO] [stdout] test byte_string ... ok
[INFO] [stdout] test empty_string ... ok
[INFO] [stdout] test unicode_string ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/utils-e83e95ddb1acdeb6
[INFO] [stdout] test utils::assert_parse_can_fail ... ok
[INFO] [stdout] test utils::assert_nparse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests serde_syn
[INFO] [stdout] test assert_nparse_can_fail ... ok
[INFO] [stdout] test assert_parse_can_fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 28) ... ok
[INFO] [stdout] test src/lib.rs - from_stream (line 151) ... ok
[INFO] [stdout] test src/error.rs - error::Error::to_syn (line 33) ... ok
[INFO] [stdout] test src/lib.rs - parser (line 120) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b0e2a9af15c3b0cb05611f6800cabf484056e7344eacbc663230119fa8f35bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b0e2a9af15c3b0cb05611f6800cabf484056e7344eacbc663230119fa8f35bb", kill_on_drop: false }`
[INFO] [stdout] 0b0e2a9af15c3b0cb05611f6800cabf484056e7344eacbc663230119fa8f35bb