[INFO] cloning repository https://github.com/VratnamT/firecracker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VratnamT/firecracker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVratnamT%2Ffirecracker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVratnamT%2Ffirecracker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d1b6d438921ca9ba0f5081378ee38ad3ebb4a9e
[INFO] checking VratnamT/firecracker against master#df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e for pr-95474
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVratnamT%2Ffirecracker" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VratnamT/firecracker on toolchain df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking git repo https://github.com/VratnamT/firecracker
[INFO] finished tweaking git repo https://github.com/VratnamT/firecracker
[INFO] tweaked toml for git repo https://github.com/VratnamT/firecracker written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/VratnamT/firecracker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tempfile v3.0.5
[INFO] [stderr]   Downloaded regex v1.0.6
[INFO] [stderr]   Downloaded syntex_errors v0.42.0
[INFO] [stderr]   Downloaded syntex_pos v0.42.0
[INFO] [stderr]   Downloaded pnet_datalink v0.21.0
[INFO] [stderr]   Downloaded rand v0.4.3
[INFO] [stderr]   Downloaded tokio-uds v0.1.7
[INFO] [stderr]   Downloaded ipnetwork v0.12.8
[INFO] [stderr]   Downloaded pnet_packet v0.21.0
[INFO] [stderr]   Downloaded pnet_transport v0.21.0
[INFO] [stderr]   Downloaded syntex v0.42.2
[INFO] [stderr]   Downloaded hyper v0.11.16
[INFO] [stderr]   Downloaded pnet_sys v0.21.0
[INFO] [stderr]   Downloaded serde_json v1.0.17
[INFO] [stderr]   Downloaded pnet v0.21.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.3
[INFO] [stderr]   Downloaded pnet_macros v0.21.0
[INFO] [stderr]   Downloaded pnet_base v0.21.0
[INFO] [stderr]   Downloaded pnet_macros_support v0.21.0
[INFO] [stderr]   Downloaded syntex_syntax v0.42.0
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded timerfd v1.0.0
[INFO] [stderr]   Downloaded epoll v2.1.0
[INFO] [stderr]   Downloaded json-patch v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c12812629bf7b128a168ff288a9ae3f904da249276e39a8ad4a0fc1c4e7a4795
[INFO] running `Command { std: "docker" "start" "-a" "c12812629bf7b128a168ff288a9ae3f904da249276e39a8ad4a0fc1c4e7a4795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c12812629bf7b128a168ff288a9ae3f904da249276e39a8ad4a0fc1c4e7a4795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12812629bf7b128a168ff288a9ae3f904da249276e39a8ad4a0fc1c4e7a4795", kill_on_drop: false }`
[INFO] [stdout] c12812629bf7b128a168ff288a9ae3f904da249276e39a8ad4a0fc1c4e7a4795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ed08a749dfdf631c6ff136447b024391e66fcc6efd9e652f74cc5ad7d2d6eab
[INFO] running `Command { std: "docker" "start" "-a" "1ed08a749dfdf631c6ff136447b024391e66fcc6efd9e652f74cc5ad7d2d6eab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking micro_http v0.1.0 (/opt/rustwide/workdir/micro_http)
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking virtio_sys v0.1.0 (/opt/rustwide/workdir/virtio_sys)
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking pnet_base v0.21.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking ipnetwork v0.12.8
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling pnet v0.21.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.3
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.27/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C panic=abort -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=8e838158e73e7700 -C extra-filename=-8e838158e73e7700 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.27/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=47fc73aea033f4c2 -C extra-filename=-47fc73aea033f4c2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.5.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=16391aa06235253b -C extra-filename=-16391aa06235253b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ucd_util=/opt/rustwide/target/debug/deps/libucd_util-3cc94c66ff24300e.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1ed08a749dfdf631c6ff136447b024391e66fcc6efd9e652f74cc5ad7d2d6eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed08a749dfdf631c6ff136447b024391e66fcc6efd9e652f74cc5ad7d2d6eab", kill_on_drop: false }`
[INFO] [stdout] 1ed08a749dfdf631c6ff136447b024391e66fcc6efd9e652f74cc5ad7d2d6eab