[INFO] updating cached repository https://github.com/masa-suzu/rson
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2e3754c5d2445350340333b94cecf2dfb2f82198
[INFO] testing masa-suzu/rson against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasa-suzu%2Frson" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masa-suzu/rson on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/masa-suzu/rson
[INFO] finished tweaking git repo https://github.com/masa-suzu/rson
[INFO] tweaked toml for git repo https://github.com/masa-suzu/rson written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/masa-suzu/rson already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] b4e9c5b93fe8099bd25d81b3230eb2fd5ada794f3aacf1e2d989c2620aed580d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b4e9c5b93fe8099bd25d81b3230eb2fd5ada794f3aacf1e2d989c2620aed580d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling nom v5.0.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.2
[INFO] [stderr]    Compiling rson v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.19s
[INFO] running `"docker" "inspect" "b4e9c5b93fe8099bd25d81b3230eb2fd5ada794f3aacf1e2d989c2620aed580d"`
[INFO] running `"docker" "rm" "-f" "b4e9c5b93fe8099bd25d81b3230eb2fd5ada794f3aacf1e2d989c2620aed580d"`
[INFO] [stdout] b4e9c5b93fe8099bd25d81b3230eb2fd5ada794f3aacf1e2d989c2620aed580d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4148a8cc735619579acc84e5f4ee283d6a4a00cd9e15004eb85057137a8427b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4148a8cc735619579acc84e5f4ee283d6a4a00cd9e15004eb85057137a8427b3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rson v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/ep.rs:84:28
[INFO] [stderr]    |
[INFO] [stderr] 84 |             Ok(Root::Array(a)) => unreachable!(),
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `"docker" "inspect" "4148a8cc735619579acc84e5f4ee283d6a4a00cd9e15004eb85057137a8427b3"`
[INFO] running `"docker" "rm" "-f" "4148a8cc735619579acc84e5f4ee283d6a4a00cd9e15004eb85057137a8427b3"`
[INFO] [stdout] 4148a8cc735619579acc84e5f4ee283d6a4a00cd9e15004eb85057137a8427b3
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e7e083c620fd299811988a42a51e369ebb352e97d6f1d364c8bd606c2995c34
[INFO] running `"docker" "start" "-a" "8e7e083c620fd299811988a42a51e369ebb352e97d6f1d364c8bd606c2995c34"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stdout] 
[INFO] [stderr]   --> src/ep.rs:84:28
[INFO] [stdout] running 13 tests
[INFO] [stderr]    |
[INFO] [stdout] test combinator::tests::boolean ... ok
[INFO] [stderr] 84 |             Ok(Root::Array(a)) => unreachable!(),
[INFO] [stdout] test json::tests::json_bool ... ok
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] test combinator::tests::string ... ok
[INFO] [stderr]    |
[INFO] [stdout] test json::tests::json_null ... ok
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] test json::tests::json_number ... ok
[INFO] [stderr] 
[INFO] [stdout] test json::tests::json_object ... ok
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] test json::tests::json_string ... ok
[INFO] [stderr] 
[INFO] [stdout] test combinator::tests::object ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rson-d031f27a99360bc0
[INFO] [stdout] test ep::tests::parse_full ... ok
[INFO] [stdout] test combinator::tests::root ... ok
[INFO] [stdout] test combinator::tests::number ... ok
[INFO] [stdout] test json::tests::json_array ... ok
[INFO] [stdout] test combinator::tests::array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rson-a2ba5d1624c07224
[INFO] [stderr]    Doc-tests rson
[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 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8e7e083c620fd299811988a42a51e369ebb352e97d6f1d364c8bd606c2995c34"`
[INFO] running `"docker" "rm" "-f" "8e7e083c620fd299811988a42a51e369ebb352e97d6f1d364c8bd606c2995c34"`
[INFO] [stdout] 8e7e083c620fd299811988a42a51e369ebb352e97d6f1d364c8bd606c2995c34