[INFO] fetching crate serde_json 1.0.67...
[INFO] testing serde_json-1.0.67 against 1.55.0 for beta-1.56-1
[INFO] extracting crate serde_json 1.0.67 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate serde_json 1.0.67 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_json 1.0.67
[INFO] finished tweaking crates.io crate serde_json 1.0.67
[INFO] tweaked toml for crates.io crate serde_json 1.0.67 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d43b2f8e2d1f8ca393a0ff80eae5ffe44c002f3b12f692d21e6901b76f7212e
[INFO] running `Command { std: "docker" "start" "-a" "8d43b2f8e2d1f8ca393a0ff80eae5ffe44c002f3b12f692d21e6901b76f7212e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d43b2f8e2d1f8ca393a0ff80eae5ffe44c002f3b12f692d21e6901b76f7212e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d43b2f8e2d1f8ca393a0ff80eae5ffe44c002f3b12f692d21e6901b76f7212e", kill_on_drop: false }`
[INFO] [stdout] 8d43b2f8e2d1f8ca393a0ff80eae5ffe44c002f3b12f692d21e6901b76f7212e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58a048fe342efbcfd8dc3cd008b09930aecfdf415a94a3a75ef6f7597aa2dd00
[INFO] running `Command { std: "docker" "start" "-a" "58a048fe342efbcfd8dc3cd008b09930aecfdf415a94a3a75ef6f7597aa2dd00", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.67 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "58a048fe342efbcfd8dc3cd008b09930aecfdf415a94a3a75ef6f7597aa2dd00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a048fe342efbcfd8dc3cd008b09930aecfdf415a94a3a75ef6f7597aa2dd00", kill_on_drop: false }`
[INFO] [stdout] 58a048fe342efbcfd8dc3cd008b09930aecfdf415a94a3a75ef6f7597aa2dd00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eb31921ba3db9a171f150c13378c2b28df1dc387e8ee819e64c928924ccc93e
[INFO] running `Command { std: "docker" "start" "-a" "1eb31921ba3db9a171f150c13378c2b28df1dc387e8ee819e64c928924ccc93e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde_json v1.0.67 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "1eb31921ba3db9a171f150c13378c2b28df1dc387e8ee819e64c928924ccc93e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb31921ba3db9a171f150c13378c2b28df1dc387e8ee819e64c928924ccc93e", kill_on_drop: false }`
[INFO] [stdout] 1eb31921ba3db9a171f150c13378c2b28df1dc387e8ee819e64c928924ccc93e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fc80ba6ef6331e8bfbcc5c736924ab8ac5123d644f0c48b43a24ea0b40c55cc2
[INFO] running `Command { std: "docker" "start" "-a" "fc80ba6ef6331e8bfbcc5c736924ab8ac5123d644f0c48b43a24ea0b40c55cc2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_json-d4c20aa2175584a1)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_json
[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] [stdout] 
[INFO] [stdout] running 98 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name serde_json --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps -L native=/opt/rustwide/target/debug/build/psm-b51cee708e052cf0/out --extern automod=/opt/rustwide/target/debug/deps/libautomod-2a33c705569ccf2d.so --extern itoa=/opt/rustwide/target/debug/deps/libitoa-61bdeea2b8939582.rlib --extern rustversion=/opt/rustwide/target/debug/deps/librustversion-a301340880844ea0.so --extern ryu=/opt/rustwide/target/debug/deps/libryu-739207766fb1644f.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-1ce2c22b35a409bb.rlib --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-99e9192bf5e81078.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-8fe885f1d4439ddc.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-22cd98406ff95724.rlib --extern serde_stacker=/opt/rustwide/target/debug/deps/libserde_stacker-999baee6440cd05b.rlib --extern trybuild=/opt/rustwide/target/debug/deps/libtrybuild-fdcaafdbdcf18744.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg limb_width_64 --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "fc80ba6ef6331e8bfbcc5c736924ab8ac5123d644f0c48b43a24ea0b40c55cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc80ba6ef6331e8bfbcc5c736924ab8ac5123d644f0c48b43a24ea0b40c55cc2", kill_on_drop: false }`
[INFO] [stdout] fc80ba6ef6331e8bfbcc5c736924ab8ac5123d644f0c48b43a24ea0b40c55cc2