[INFO] crate serde_json 1.0.56 is already in cache
[INFO] testing serde_json-1.0.56 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate serde_json 1.0.56 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_json 1.0.56 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_json 1.0.56
[INFO] finished tweaking crates.io crate serde_json 1.0.56
[INFO] tweaked toml for crates.io crate serde_json 1.0.56 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 56addeb259cd91b469afa34fdece72f41f67e21f133e5e9bed658b3a4d094bfb
[INFO] running `Command { std: "docker" "start" "-a" "56addeb259cd91b469afa34fdece72f41f67e21f133e5e9bed658b3a4d094bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56addeb259cd91b469afa34fdece72f41f67e21f133e5e9bed658b3a4d094bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56addeb259cd91b469afa34fdece72f41f67e21f133e5e9bed658b3a4d094bfb", kill_on_drop: false }`
[INFO] [stdout] 56addeb259cd91b469afa34fdece72f41f67e21f133e5e9bed658b3a4d094bfb
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f980561fb86b28d3030d3f14540ae7c537ab96601060928f8ce0e91dcda0feaf
[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" "f980561fb86b28d3030d3f14540ae7c537ab96601060928f8ce0e91dcda0feaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling serde_json v1.0.56 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.13s
[INFO] running `Command { std: "docker" "inspect" "f980561fb86b28d3030d3f14540ae7c537ab96601060928f8ce0e91dcda0feaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f980561fb86b28d3030d3f14540ae7c537ab96601060928f8ce0e91dcda0feaf", kill_on_drop: false }`
[INFO] [stdout] f980561fb86b28d3030d3f14540ae7c537ab96601060928f8ce0e91dcda0feaf
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d5560e8030e6fe8347aa400e2325e5823445f4f6ed095afdeb214c371f8a0a4
[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" "7d5560e8030e6fe8347aa400e2325e5823445f4f6ed095afdeb214c371f8a0a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling dissimilar v1.0.2
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling psm v0.1.10
[INFO] [stderr]    Compiling stacker v0.1.9
[INFO] [stderr]    Compiling trybuild v1.0.30
[INFO] [stderr]    Compiling serde_stacker v0.1.4
[INFO] [stderr]    Compiling serde_json v1.0.56 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.88s
[INFO] running `Command { std: "docker" "inspect" "7d5560e8030e6fe8347aa400e2325e5823445f4f6ed095afdeb214c371f8a0a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d5560e8030e6fe8347aa400e2325e5823445f4f6ed095afdeb214c371f8a0a4", kill_on_drop: false }`
[INFO] [stdout] 7d5560e8030e6fe8347aa400e2325e5823445f4f6ed095afdeb214c371f8a0a4
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b04ce75c01ed55a0ac7c888b7040175d417c1f600b473871802e56b194318ece
[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" "b04ce75c01ed55a0ac7c888b7040175d417c1f600b473871802e56b194318ece", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_json-9676d58220afa4b4
[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] [stderr]    Doc-tests serde_json
[INFO] [stdout] 
[INFO] [stdout] running 95 tests
[INFO] [stdout] test src/de.rs - de::from_reader (line 2421) ... ok
[INFO] [stdout] test src/lib.rs - (line 212) ... ok
[INFO] [stdout] test src/error.rs - error::io::Error::from (line 135) ... ok
[INFO] [stdout] test src/lib.rs - (line 43) ... ok
[INFO] [stdout] test src/de.rs - de::from_str (line 2551) ... ok
[INFO] [stdout] test src/de.rs - de::from_reader (line 2457) ... ok
[INFO] [stdout] test src/de.rs - de::StreamDeserializer (line 2221) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/de.rs - de::&'a mut Deserializer<R>::deserialize_bytes (line 1584) ... ok
[INFO] [stdout] test src/lib.rs - (line 183) ... ok
[INFO] [stdout] test src/de.rs - de::&'a mut Deserializer<R>::deserialize_bytes (line 1563) ... ok
[INFO] [stdout] test src/macros.rs - json (line 25) ... ok
[INFO] [stdout] test src/de.rs - de::StreamDeserializer::byte_offset (line 2271) ... ok
[INFO] [stdout] test src/lib.rs - (line 121) ... ok
[INFO] [stdout] test src/lib.rs - (line 243) ... ok
[INFO] [stdout] test src/de.rs - de::from_slice (line 2509) ... ok
[INFO] [stdout] test src/macros.rs - json (line 3) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::key (line 443) ... ok
[INFO] [stdout] test src/macros.rs - json (line 42) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::or_insert (line 459) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::or_insert_with (line 480) ... ok
[INFO] [stdout] test src/map.rs - map::Map<String, Value> (line 236) ... ok
[INFO] [stdout] test src/map.rs - map::Map<String, Value> (line 264) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::get_mut (line 600) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::get (line 576) ... ok
[INFO] [stdout] test src/map.rs - map::VacantEntry::key (line 505) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::into_mut (line 626) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::key (line 552) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::remove (line 678) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::insert (line 653) ... ok
[INFO] [stdout] test src/number.rs - number::Number::as_f64 (line 196) ... ok
[INFO] [stdout] test src/map.rs - map::VacantEntry::insert (line 527) ... ok
[INFO] [stdout] test src/number.rs - number::Number::from_f64 (line 220) ... ok
[INFO] [stdout] test src/number.rs - number::Number::as_i64 (line 143) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 103) ... ok
[INFO] [stdout] test src/number.rs - number::Number::is_f64 (line 111) ... ok
[INFO] [stdout] test src/number.rs - number::Number::as_u64 (line 174) ... ok
[INFO] [stdout] test src/number.rs - number::Number::is_u64 (line 79) ... ok
[INFO] [stdout] test src/number.rs - number::Number::is_i64 (line 48) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 127) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 119) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 223) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 71) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 161) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 144) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 39) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 177) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 55) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 87) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 193) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 37) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Value::index (line 194) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 61) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Index (line 21) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Value::index_mut (line 233) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Bool (line 123) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Number (line 132) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 8) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 207) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 200) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Null (line 114) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Array (line 150) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Object (line 165) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value (line 869) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::String (line 141) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_bool (line 670) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_null (line 708) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_array (line 408) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_f64 (line 632) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_str (line 466) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_i64 (line 593) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_array_mut (line 429) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::fmt (line 218) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_object_mut (line 370) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::get_mut (line 312) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_object (line 349) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::get (line 270) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_f64 (line 572) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_array (line 391) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_u64 (line 613) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::get (line 286) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_boolean (line 653) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_null (line 692) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_string (line 449) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_u64 (line 544) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_object (line 331) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_number (line 495) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_i64 (line 518) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::pointer (line 739) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::pointer_mut (line 794) ... ok
[INFO] [stdout] test src/value/mod.rs - value::to_value (line 909) ... ok
[INFO] [stdout] test src/value/mod.rs - value::from_value (line 971) ... ok
[INFO] [stdout] test src/value/ser.rs - value::ser::Serializer (line 45) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::take (line 851) ... ok
[INFO] [stdout] test src/value/mod.rs - value::to_value (line 947) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 95 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b04ce75c01ed55a0ac7c888b7040175d417c1f600b473871802e56b194318ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b04ce75c01ed55a0ac7c888b7040175d417c1f600b473871802e56b194318ece", kill_on_drop: false }`
[INFO] [stdout] b04ce75c01ed55a0ac7c888b7040175d417c1f600b473871802e56b194318ece