[INFO] fetching crate json_flex 0.3.3...
[INFO] building json_flex-0.3.3 against try#d5c88c22807925c189328ef9d923c5d2b11a95b8+rustflags=-Zprofile-closures for pr-87066-3
[INFO] extracting crate json_flex 0.3.3 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate json_flex 0.3.3 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_flex 0.3.3
[INFO] finished tweaking crates.io crate json_flex 0.3.3
[INFO] tweaked toml for crates.io crate json_flex 0.3.3 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe5478cd8a61307dd9b0fcbcbfa1afc5e8bf7f740e260da46659644a2ea45be1
[INFO] running `Command { std: "docker" "start" "-a" "fe5478cd8a61307dd9b0fcbcbfa1afc5e8bf7f740e260da46659644a2ea45be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe5478cd8a61307dd9b0fcbcbfa1afc5e8bf7f740e260da46659644a2ea45be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe5478cd8a61307dd9b0fcbcbfa1afc5e8bf7f740e260da46659644a2ea45be1", kill_on_drop: false }`
[INFO] [stdout] fe5478cd8a61307dd9b0fcbcbfa1afc5e8bf7f740e260da46659644a2ea45be1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=forbid -Zprofile-closures" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97dec93fa79e68502072728feeac4c911f3d63b5a96e981a82634eb0131fd43d
[INFO] running `Command { std: "docker" "start" "-a" "97dec93fa79e68502072728feeac4c911f3d63b5a96e981a82634eb0131fd43d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (9bd2d79e9eecd196, aa32f620b5985c2f), 8, 16
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (b4344b742284a60e, ca73186a1555238), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (742214919dc8982f, 12016d1ecf22745f), 0, 0
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (e2b4957dafbbef6e, a565bec6a7d70e1d), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (99ce86fb080cfe70, dbf5c467adc61c57), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (dde96436f6bda6b9, 741c119d2cc6b012), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (bb243cf7217373f3, 8d0be22889bb38d7), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (46c8380fa24264a2, 96f9106fd31a1857), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (c0b282869cde4d16, 638371fc5190357e), 8, 8
[INFO] [stderr] SG_CR_Eslkdjf: rustc_serialize, (df2c32da53dd6288, 7e06c1fd6d1b91e7), 0, 0
[INFO] [stderr]    Compiling json_flex v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `RustcDecodable`: rustc-serialize is deprecated and no longer supported
[INFO] [stdout]  --> src/json_flex.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(RustcDecodable, Debug, Clone)]
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "97dec93fa79e68502072728feeac4c911f3d63b5a96e981a82634eb0131fd43d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97dec93fa79e68502072728feeac4c911f3d63b5a96e981a82634eb0131fd43d", kill_on_drop: false }`
[INFO] [stdout] 97dec93fa79e68502072728feeac4c911f3d63b5a96e981a82634eb0131fd43d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=forbid -Zprofile-closures" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 864dbbcdd0d48e87dfa10b82f100e19488c63bf706534563263ecf6a028fdb6a
[INFO] running `Command { std: "docker" "start" "-a" "864dbbcdd0d48e87dfa10b82f100e19488c63bf706534563263ecf6a028fdb6a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "864dbbcdd0d48e87dfa10b82f100e19488c63bf706534563263ecf6a028fdb6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "864dbbcdd0d48e87dfa10b82f100e19488c63bf706534563263ecf6a028fdb6a", kill_on_drop: false }`
[INFO] [stdout] 864dbbcdd0d48e87dfa10b82f100e19488c63bf706534563263ecf6a028fdb6a