[INFO] fetching crate fuzzcheck 0.7.4...
[INFO] checking fuzzcheck-0.7.4 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate fuzzcheck 0.7.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate fuzzcheck 0.7.4 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck 0.7.4
[INFO] finished tweaking crates.io crate fuzzcheck 0.7.4
[INFO] tweaked toml for crates.io crate fuzzcheck 0.7.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c74d38d00246495e57087103426bf94cb0bb07b7617c58defabeb2d1fc960a6d
[INFO] running `Command { std: "docker" "start" "-a" "c74d38d00246495e57087103426bf94cb0bb07b7617c58defabeb2d1fc960a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c74d38d00246495e57087103426bf94cb0bb07b7617c58defabeb2d1fc960a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c74d38d00246495e57087103426bf94cb0bb07b7617c58defabeb2d1fc960a6d", kill_on_drop: false }`
[INFO] [stdout] c74d38d00246495e57087103426bf94cb0bb07b7617c58defabeb2d1fc960a6d
[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=forbid" "-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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0315ca2208f9f66f1d218002ecd8e5fb3e52d06f8ee82674ae99e54c0c4b8331
[INFO] running `Command { std: "docker" "start" "-a" "0315ca2208f9f66f1d218002ecd8e5fb3e52d06f8ee82674ae99e54c0c4b8331", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking fuzzcheck_common v0.7.0
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]    Compiling decent-synquote-alternative v0.4.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling fuzzcheck v0.7.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.7.0
[INFO] [stderr] warning: src/code_coverage_sensor/instrumentation_pointers_linux.c:1:12: warning: '__llvm_profile_runtime' initialized and declared 'extern'
[INFO] [stderr] warning:     1 | extern int __llvm_profile_runtime = 0;
[INFO] [stderr] warning:       |            ^~~~~~~~~~~~~~~~~~~~~~
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.59s
[INFO] running `Command { std: "docker" "inspect" "0315ca2208f9f66f1d218002ecd8e5fb3e52d06f8ee82674ae99e54c0c4b8331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0315ca2208f9f66f1d218002ecd8e5fb3e52d06f8ee82674ae99e54c0c4b8331", kill_on_drop: false }`
[INFO] [stdout] 0315ca2208f9f66f1d218002ecd8e5fb3e52d06f8ee82674ae99e54c0c4b8331