[INFO] fetching crate serde-json-helpers 0.1.2...
[INFO] testing serde-json-helpers-0.1.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate serde-json-helpers 0.1.2 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate serde-json-helpers 0.1.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-json-helpers 0.1.2
[INFO] finished tweaking crates.io crate serde-json-helpers 0.1.2
[INFO] tweaked toml for crates.io crate serde-json-helpers 0.1.2 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 380c2d64b386e9e0f5e9b965d3f550aa1f47626e17918efd54a2495aba8be56c
[INFO] running `Command { std: "docker" "start" "-a" "380c2d64b386e9e0f5e9b965d3f550aa1f47626e17918efd54a2495aba8be56c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "380c2d64b386e9e0f5e9b965d3f550aa1f47626e17918efd54a2495aba8be56c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "380c2d64b386e9e0f5e9b965d3f550aa1f47626e17918efd54a2495aba8be56c", kill_on_drop: false }`
[INFO] [stdout] 380c2d64b386e9e0f5e9b965d3f550aa1f47626e17918efd54a2495aba8be56c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9245059df5984c4ae05cc331f44b4921c4b5707d44432653152bac7815485f96
[INFO] running `Command { std: "docker" "start" "-a" "9245059df5984c4ae05cc331f44b4921c4b5707d44432653152bac7815485f96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde-json-helpers v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stdout]   --> src/string_transform.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     s.to_ascii_uppercase();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stdout]    --> src/string_transform.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             s.to_ascii_lowercase();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.33s
[INFO] running `Command { std: "docker" "inspect" "9245059df5984c4ae05cc331f44b4921c4b5707d44432653152bac7815485f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9245059df5984c4ae05cc331f44b4921c4b5707d44432653152bac7815485f96", kill_on_drop: false }`
[INFO] [stdout] 9245059df5984c4ae05cc331f44b4921c4b5707d44432653152bac7815485f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 355c821cc69effa8c63344c0e8548276b4f3a0e76f3671ac4d429908dd3bbb46
[INFO] running `Command { std: "docker" "start" "-a" "355c821cc69effa8c63344c0e8548276b4f3a0e76f3671ac4d429908dd3bbb46", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde-json-helpers v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stdout]   --> src/string_transform.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     s.to_ascii_uppercase();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stdout]    --> src/string_transform.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             s.to_ascii_lowercase();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stdout]   --> src/string_transform.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     s.to_ascii_uppercase();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stdout]    --> src/string_transform.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             s.to_ascii_lowercase();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "355c821cc69effa8c63344c0e8548276b4f3a0e76f3671ac4d429908dd3bbb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "355c821cc69effa8c63344c0e8548276b4f3a0e76f3671ac4d429908dd3bbb46", kill_on_drop: false }`
[INFO] [stdout] 355c821cc69effa8c63344c0e8548276b4f3a0e76f3671ac4d429908dd3bbb46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 46b93e24fe0ea55ce2b578745ef62a573d4fa536d714e83528e405fcd9f55c6a
[INFO] running `Command { std: "docker" "start" "-a" "46b93e24fe0ea55ce2b578745ef62a573d4fa536d714e83528e405fcd9f55c6a", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stderr]   --> src/string_transform.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     s.to_ascii_uppercase();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stderr]    --> src/string_transform.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |             s.to_ascii_lowercase();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stderr] 
[INFO] [stderr] warning: `serde-json-helpers` (lib) generated 2 warnings
[INFO] [stderr] warning: `serde-json-helpers` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_json_helpers-259cfd016e0769ae)
[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] [stderr]      Running tests/deserialize.rs (/opt/rustwide/target/debug/deps/deserialize-eb8d1f0fdfdce3e3)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test can_deserialize_lowercase ... ok
[INFO] [stdout] test can_deserialize_prepended_without_transform ... ok
[INFO] [stdout] test can_deserialize_uppercase ... ok
[INFO] [stdout] test can_deserialize_without_transform ... ok
[INFO] [stdout] test can_serialize_kebab_case ... ok
[INFO] [stdout] test can_serialize_prepended_snake_case ... ok
[INFO] [stdout] test can_serialize_screaming_kebab_case ... ok
[INFO] [stdout] test can_serialize_snake_case ... ok
[INFO] [stdout] test can_serialize_screaming_snake_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/serialize.rs (/opt/rustwide/target/debug/deps/serialize-ce2f8c6d50f80e4d)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test can_serialize_kebab_case ... ok
[INFO] [stdout] test can_serialize_lowercase ... ok
[INFO] [stdout] test can_serialize_prepended_snake_case ... ok
[INFO] [stdout] test can_serialize_prepended_without_transform ... ok
[INFO] [stdout] test can_serialize_screaming_kebab_case ... ok
[INFO] [stdout] test can_serialize_screaming_snake_case ... ok
[INFO] [stdout] test can_serialize_snake_case ... ok
[INFO] [stdout] test can_serialize_uppercase ... ok
[INFO] [stdout] test can_serialize_without_transform ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/util.rs (/opt/rustwide/target/debug/deps/util-d6f593b41a8b9765)
[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] [stderr]    Doc-tests serde-json-helpers
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "46b93e24fe0ea55ce2b578745ef62a573d4fa536d714e83528e405fcd9f55c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46b93e24fe0ea55ce2b578745ef62a573d4fa536d714e83528e405fcd9f55c6a", kill_on_drop: false }`
[INFO] [stdout] 46b93e24fe0ea55ce2b578745ef62a573d4fa536d714e83528e405fcd9f55c6a