[INFO] fetching crate serde_json 1.0.61...
[INFO] testing serde_json-1.0.61 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serde_json 1.0.61 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde_json 1.0.61 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_json 1.0.61
[INFO] finished tweaking crates.io crate serde_json 1.0.61
[INFO] tweaked toml for crates.io crate serde_json 1.0.61 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] cd083a88f67537d1324dd559deafb824318c3268db51c00b93eeb1b2440efacf
[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" "cd083a88f67537d1324dd559deafb824318c3268db51c00b93eeb1b2440efacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd083a88f67537d1324dd559deafb824318c3268db51c00b93eeb1b2440efacf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd083a88f67537d1324dd559deafb824318c3268db51c00b93eeb1b2440efacf", kill_on_drop: false }`
[INFO] [stdout] cd083a88f67537d1324dd559deafb824318c3268db51c00b93eeb1b2440efacf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] e360879d9cabe6b2541ee41feff42b65c3c27de9f56b8c252bfbac6180c1e7dd
[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" "e360879d9cabe6b2541ee41feff42b65c3c27de9f56b8c252bfbac6180c1e7dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.61 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.48s
[INFO] running `Command { std: "docker" "inspect" "e360879d9cabe6b2541ee41feff42b65c3c27de9f56b8c252bfbac6180c1e7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e360879d9cabe6b2541ee41feff42b65c3c27de9f56b8c252bfbac6180c1e7dd", kill_on_drop: false }`
[INFO] [stdout] e360879d9cabe6b2541ee41feff42b65c3c27de9f56b8c252bfbac6180c1e7dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 9698442633d7e9e5dfc3017b2f4318bac94f25a997333a0148df8f58b3a2ae46
[INFO] running `Command { std: "docker" "start" "-a" "9698442633d7e9e5dfc3017b2f4318bac94f25a997333a0148df8f58b3a2ae46", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling trybuild v1.0.38
[INFO] [stderr]    Compiling dissimilar v1.0.2
[INFO] [stderr]    Compiling automod v1.0.0
[INFO] [stderr]    Compiling serde_stacker v0.1.4
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling serde_json v1.0.61 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.86s
[INFO] running `Command { std: "docker" "inspect" "9698442633d7e9e5dfc3017b2f4318bac94f25a997333a0148df8f58b3a2ae46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9698442633d7e9e5dfc3017b2f4318bac94f25a997333a0148df8f58b3a2ae46", kill_on_drop: false }`
[INFO] [stdout] 9698442633d7e9e5dfc3017b2f4318bac94f25a997333a0148df8f58b3a2ae46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a09a3fef61e61c1470a35926437dc5bf1e4b8cd23dbdc7829680fba3b5b8ee37
[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" "a09a3fef61e61c1470a35926437dc5bf1e4b8cd23dbdc7829680fba3b5b8ee37", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serde_json-c06a24af637c6c81
[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 97 tests
[INFO] [stdout] test src/de.rs - de::from_reader (line 2421) ... 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_reader (line 2457) ... ok
[INFO] [stdout] test src/de.rs - de::&'a mut Deserializer<R>::deserialize_bytes (line 1563) ... ok
[INFO] [stdout] test src/de.rs - de::from_str (line 2551) ... ok
[INFO] [stdout] test src/lib.rs - (line 243) ... ok
[INFO] [stdout] test src/lib.rs - (line 121) ... ok
[INFO] [stdout] test src/lib.rs - (line 212) ... ok
[INFO] [stdout] test src/de.rs - de::StreamDeserializer (line 2221) ... ok
[INFO] [stdout] test src/de.rs - de::StreamDeserializer::byte_offset (line 2271) ... ok
[INFO] [stdout] test src/lib.rs - (line 183) ... ok
[INFO] [stdout] test src/de.rs - de::from_slice (line 2509) ... ok
[INFO] [stdout] test src/de.rs - de::&'a mut Deserializer<R>::deserialize_bytes (line 1584) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::key (line 491) ... ok
[INFO] [stdout] test src/macros.rs - json (line 3) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/macros.rs - json (line 42) ... ok
[INFO] [stdout] test src/macros.rs - json (line 25) ... ok
[INFO] [stdout] test src/map.rs - map::Map<String, Value> (line 284) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::or_insert_with (line 528) ... ok
[INFO] [stdout] test src/map.rs - map::Entry::or_insert (line 507) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::get_mut (line 648) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::get (line 624) ... ok
[INFO] [stdout] test src/map.rs - map::Map<String, Value> (line 312) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::into_mut (line 674) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::insert (line 701) ... ok
[INFO] [stdout] test src/map.rs - map::VacantEntry::key (line 553) ... ok
[INFO] [stdout] test src/number.rs - number::Number::from_f64 (line 220) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::key (line 600) ... ok
[INFO] [stdout] test src/number.rs - number::Number::is_f64 (line 111) ... ok
[INFO] [stdout] test src/number.rs - number::Number::is_u64 (line 79) ... ok
[INFO] [stdout] test src/map.rs - map::OccupiedEntry::remove (line 726) ... ok
[INFO] [stdout] test src/number.rs - number::Number::as_f64 (line 196) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 127) ... ok
[INFO] [stdout] test src/map.rs - map::VacantEntry::insert (line 575) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 103) ... 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 119) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 144) ... ok
[INFO] [stdout] test src/number.rs - number::Number::as_u64 (line 174) ... 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 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 71) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 160) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 259) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 239) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 193) ... 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_iter (line 209) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Value::index (line 194) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Value::index_mut (line 233) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 223) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from_iter (line 216) ... ok
[INFO] [stdout] test src/value/from.rs - value::from::Value::from (line 87) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 37) ... ok
[INFO] [stdout] test src/value/index.rs - value::index::Index (line 21) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 8) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Bool (line 123) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Array (line 150) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::String (line 141) ... ok
[INFO] [stdout] test src/value/mod.rs - value (line 61) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value (line 869) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Null (line 114) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_bool (line 670) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Number (line 132) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::Object (line 165) ... 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::as_null (line 708) ... 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 (line 408) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_object (line 349) ... 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::as_f64 (line 632) ... 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_u64 (line 613) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::as_str (line 466) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::get (line 286) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_array (line 391) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::fmt (line 218) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::is_i64 (line 518) ... ok
[INFO] [stdout] test src/value/mod.rs - value::Value::get (line 270) ... 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_f64 (line 572) ... 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_number (line 495) ... 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_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::take (line 851) ... ok
[INFO] [stdout] test src/value/ser.rs - value::ser::Serializer (line 45) ... 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::from_value (line 971) ... ok
[INFO] [stdout] test src/value/mod.rs - value::to_value (line 909) ... ok
[INFO] [stdout] test src/value/mod.rs - value::to_value (line 947) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 97 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a09a3fef61e61c1470a35926437dc5bf1e4b8cd23dbdc7829680fba3b5b8ee37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09a3fef61e61c1470a35926437dc5bf1e4b8cd23dbdc7829680fba3b5b8ee37", kill_on_drop: false }`
[INFO] [stdout] a09a3fef61e61c1470a35926437dc5bf1e4b8cd23dbdc7829680fba3b5b8ee37