[INFO] fetching crate serde_with 1.6.0...
[INFO] testing serde_with-1.6.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde_with 1.6.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate serde_with 1.6.0 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_with 1.6.0
[INFO] removed 5 missing tests
[INFO] finished tweaking crates.io crate serde_with 1.6.0
[INFO] tweaked toml for crates.io crate serde_with 1.6.0 written to /workspace/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 17897fe8886429450a07eff0fde2dae52992dd89912ca35b3e8703745dc53cf8
[INFO] running `Command { std: "docker" "start" "-a" "17897fe8886429450a07eff0fde2dae52992dd89912ca35b3e8703745dc53cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17897fe8886429450a07eff0fde2dae52992dd89912ca35b3e8703745dc53cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17897fe8886429450a07eff0fde2dae52992dd89912ca35b3e8703745dc53cf8", kill_on_drop: false }`
[INFO] [stdout] 17897fe8886429450a07eff0fde2dae52992dd89912ca35b3e8703745dc53cf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 05461f1731057502330a63818972b45a7f300207c565c27424eca8012a93c599
[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" "05461f1731057502330a63818972b45a7f300207c565c27424eca8012a93c599", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling serde_with_macros v1.3.0
[INFO] [stderr]    Compiling serde_with v1.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.46s
[INFO] running `Command { std: "docker" "inspect" "05461f1731057502330a63818972b45a7f300207c565c27424eca8012a93c599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05461f1731057502330a63818972b45a7f300207c565c27424eca8012a93c599", kill_on_drop: false }`
[INFO] [stdout] 05461f1731057502330a63818972b45a7f300207c565c27424eca8012a93c599
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 1ddae13a4e976c296fa0bd608fbd7f8ec21369411dec8fa73896618c1076203c
[INFO] running `Command { std: "docker" "start" "-a" "1ddae13a4e976c296fa0bd608fbd7f8ec21369411dec8fa73896618c1076203c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling dissimilar v1.0.2
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.9.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.0
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling expect-test v1.1.0
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling ron v0.6.4
[INFO] [stderr]    Compiling url v2.2.0
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling version-sync v0.9.1
[INFO] [stderr]    Compiling serde_with v1.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.86s
[INFO] running `Command { std: "docker" "inspect" "1ddae13a4e976c296fa0bd608fbd7f8ec21369411dec8fa73896618c1076203c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ddae13a4e976c296fa0bd608fbd7f8ec21369411dec8fa73896618c1076203c", kill_on_drop: false }`
[INFO] [stdout] 1ddae13a4e976c296fa0bd608fbd7f8ec21369411dec8fa73896618c1076203c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] fef91cab7734fe075b0225d9e93081bc621dca0bbd1fcf7bdc7edda8c3ddaafd
[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" "fef91cab7734fe075b0225d9e93081bc621dca0bbd1fcf7bdc7edda8c3ddaafd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_with-720d8456f9165f4c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test utils::duration::test_parse_float_into_time_parts ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_with
[INFO] [stdout] 
[INFO] [stdout] running 58 tests
[INFO] [stdout] test src/de/mod.rs - de::DeserializeAs (line 29) ... ignored
[INFO] [stdout] test src/de/mod.rs - de::DeserializeAs (line 42) ... ignored
[INFO] [stdout] test src/lib.rs - (line 142) ... ok
[INFO] [stdout] test src/lib.rs - As (line 323) ... ok
[INFO] [stdout] test src/lib.rs - DurationSeconds (line 746) ... ok
[INFO] [stdout] test src/lib.rs - DisplayFromStr (line 392) ... ok
[INFO] [stdout] test src/lib.rs - As (line 309) ... ok
[INFO] [stdout] test src/lib.rs - (line 68) ... ok
[INFO] [stdout] test src/lib.rs - (line 103) ... ok
[INFO] [stdout] test src/lib.rs - DefaultOnNull (line 599) ... ok
[INFO] [stdout] test src/lib.rs - DurationSecondsWithFrac (line 880) ... ok
[INFO] [stdout] test src/lib.rs - DefaultOnError (line 518) ... ok
[INFO] [stdout] test src/lib.rs - DurationSeconds (line 691) ... ok
[INFO] [stdout] test src/lib.rs - DefaultOnNull (line 574) ... ok
[INFO] [stdout] test src/lib.rs - BytesOrString (line 628) ... ok
[INFO] [stdout] test src/lib.rs - DefaultOnError (line 541) ... ok
[INFO] [stdout] test src/lib.rs - TimestampSecondsWithFrac (line 1151) ... ok
[INFO] [stdout] test src/lib.rs - TimestampSeconds (line 1014) ... ok
[INFO] [stdout] test src/flatten_maybe.rs - flattened_maybe (line 18) ... ok
[INFO] [stdout] test src/lib.rs - NoneAsEmptyString (line 436) ... ok
[INFO] [stdout] test src/rust.rs - rust::btreemap_as_tuple_list (line 1237) ... ok
[INFO] [stdout] test src/rust.rs - rust::StringWithSeparator (line 272) ... ok
[INFO] [stdout] test src/lib.rs - DurationSecondsWithFrac (line 831) ... ok
[INFO] [stdout] test src/lib.rs - TimestampSecondsWithFrac (line 1102) ... ok
[INFO] [stdout] test src/rust.rs - rust::default_on_error (line 1636) ... ok
[INFO] [stdout] test src/lib.rs - DefaultOnError (line 484) ... ok
[INFO] [stdout] test src/rust.rs - rust::bytes_or_string (line 1519) ... ok
[INFO] [stdout] test src/rust.rs - rust::bytes_or_string (line 1534) ... ok
[INFO] [stdout] test src/rust.rs - rust::display_fromstr (line 31) ... ok
[INFO] [stdout] test src/rust.rs - rust::default_on_null (line 1745) ... ok
[INFO] [stdout] test src/rust.rs - rust::seq_display_fromstr (line 130) ... ignored
[INFO] [stdout] test src/rust.rs - rust::seq_display_fromstr (line 135) ... ignored
[INFO] [stdout] test src/rust.rs - rust::seq_display_fromstr (line 141) ... ignored
[INFO] [stdout] test src/lib.rs - TimestampSeconds (line 959) ... ok
[INFO] [stdout] test src/rust.rs - rust::btreemap_as_tuple_list (line 1254) ... ok
[INFO] [stdout] test src/rust.rs - rust::default_on_error (line 1687) ... ok
[INFO] [stdout] test src/rust.rs - rust::hashmap_as_tuple_list (line 1099) ... ok
[INFO] [stdout] test src/rust.rs - rust::default_on_null (line 1766) ... ok
[INFO] [stdout] test src/rust.rs - rust::default_on_error (line 1657) ... ok
[INFO] [stdout] test src/rust.rs - rust::display_fromstr (line 47) ... ok
[INFO] [stdout] test src/rust.rs - rust::StringWithSeparator (line 288) ... ok
[INFO] [stdout] test src/ser/mod.rs - ser::SerializeAs (line 29) ... ignored
[INFO] [stdout] test src/ser/mod.rs - ser::SerializeAs (line 46) ... ignored
[INFO] [stdout] test src/rust.rs - rust::string_empty_as_none (line 970) ... ok
[INFO] [stdout] test src/rust.rs - rust::maps_duplicate_key_is_error (line 631) ... ok
[INFO] [stdout] test src/rust.rs - rust::tuple_list_as_map (line 1345) ... ok
[INFO] [stdout] test src/rust.rs - rust::double_option (line 377) ... ok
[INFO] [stdout] test src/rust.rs - rust::maps_first_key_wins (line 868) ... ok
[INFO] [stdout] test src/with_prefix.rs - with_prefix (line 37) ... ok
[INFO] [stdout] test src/rust.rs - rust::hashmap_as_tuple_list (line 1140) ... ok
[INFO] [stdout] test src/rust.rs - rust::hashmap_as_tuple_list (line 1116) ... ok
[INFO] [stdout] test src/rust.rs - rust::string_empty_as_none (line 986) ... ok
[INFO] [stdout] test src/rust.rs - rust::sets_duplicate_value_is_error (line 532) ... ok
[INFO] [stdout] test src/rust.rs - rust::tuple_list_as_map (line 1399) ... ok
[INFO] [stdout] test src/rust.rs - rust::seq_display_fromstr (line 148) ... ok
[INFO] [stdout] test src/rust.rs - rust::unwrap_or_skip (line 448) ... ok
[INFO] [stdout] test src/with_prefix.rs - with_prefix (line 55) ... ok
[INFO] [stdout] test src/rust.rs - rust::tuple_list_as_map (line 1364) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 7 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fef91cab7734fe075b0225d9e93081bc621dca0bbd1fcf7bdc7edda8c3ddaafd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef91cab7734fe075b0225d9e93081bc621dca0bbd1fcf7bdc7edda8c3ddaafd", kill_on_drop: false }`
[INFO] [stdout] fef91cab7734fe075b0225d9e93081bc621dca0bbd1fcf7bdc7edda8c3ddaafd