[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 try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVratnamT%2Ffirecracker" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VratnamT/firecracker on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/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-2/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex v0.42.2
[INFO] [stderr]   Downloaded pnet_transport v0.21.0
[INFO] [stderr]   Downloaded timerfd v1.0.0
[INFO] [stderr]   Downloaded syntex_pos v0.42.0
[INFO] [stderr]   Downloaded syntex_syntax v0.42.0
[INFO] [stderr]   Downloaded pnet_datalink v0.21.0
[INFO] [stderr]   Downloaded tokio-uds v0.1.7
[INFO] [stderr]   Downloaded ipnetwork v0.12.8
[INFO] [stderr]   Downloaded pnet v0.21.0
[INFO] [stderr]   Downloaded regex v1.0.6
[INFO] [stderr]   Downloaded serde_json v1.0.17
[INFO] [stderr]   Downloaded syntex_errors v0.42.0
[INFO] [stderr]   Downloaded pnet_packet v0.21.0
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded pnet_base v0.21.0
[INFO] [stderr]   Downloaded pnet_sys v0.21.0
[INFO] [stderr]   Downloaded tempfile v3.0.5
[INFO] [stderr]   Downloaded regex-syntax v0.6.3
[INFO] [stderr]   Downloaded pnet_macros_support v0.21.0
[INFO] [stderr]   Downloaded pnet_macros v0.21.0
[INFO] [stderr]   Downloaded epoll v2.1.0
[INFO] [stderr]   Downloaded json-patch v0.2.1
[INFO] [stderr]   Downloaded hyper v0.11.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", 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] 4c252d3f6fb98f4b3bbced1252787b0576415cb78148e0b8e77b17782d0341c5
[INFO] running `Command { std: "docker" "start" "-a" "4c252d3f6fb98f4b3bbced1252787b0576415cb78148e0b8e77b17782d0341c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c252d3f6fb98f4b3bbced1252787b0576415cb78148e0b8e77b17782d0341c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c252d3f6fb98f4b3bbced1252787b0576415cb78148e0b8e77b17782d0341c5", kill_on_drop: false }`
[INFO] [stdout] 4c252d3f6fb98f4b3bbced1252787b0576415cb78148e0b8e77b17782d0341c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 273cfc105da2b30c10a96646c4d10f249e403908caaf0af1cedba112f13f2222
[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" "273cfc105da2b30c10a96646c4d10f249e403908caaf0af1cedba112f13f2222", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[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 cfg-if v0.1.6
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking micro_http v0.1.0 (/opt/rustwide/workdir/micro_http)
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking virtio_sys v0.1.0 (/opt/rustwide/workdir/virtio_sys)
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking pnet_base v0.21.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking ipnetwork v0.12.8
[INFO] [stderr]    Compiling pnet v0.21.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking regex-syntax v0.6.3
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking pnet_macros_support v0.21.0
[INFO] [stderr]     Checking libc v0.2.44
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking sys_util v0.1.0 (/opt/rustwide/workdir/sys_util)
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking fc_util v0.1.0 (/opt/rustwide/workdir/fc_util)
[INFO] [stderr]     Checking timerfd v1.0.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking epoll v2.1.0
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking memchr v2.1.1
[INFO] [stderr]     Checking seccomp v0.1.0 (/opt/rustwide/workdir/seccomp)
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking pnet_sys v0.21.0
[INFO] [stderr]     Checking backtrace-sys v0.1.24
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stdout] error[E0460]: found possibly newer version of crate `rustc_serialize` which `syntex_pos` depends on
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_errors-0.42.0/src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | extern crate syntex_pos as syntax_pos;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: perhaps that crate needs to be recompiled?
[INFO] [stdout]    = note: the following crate versions were found:
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-306a29a12f142e2b.rmeta
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-e34bce751854d6ee.rmeta
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-e34bce751854d6ee.rlib
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-745f5483b25883c6.rmeta
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-dec499265b6c7591.rmeta
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-04395d46d85f43bf.rmeta
[INFO] [stdout]            crate `rustc_serialize`: /opt/rustwide/target/debug/deps/librustc_serialize-6f34013fb813232d.rmeta
[INFO] [stdout]            crate `syntex_pos`: /opt/rustwide/target/debug/deps/libsyntex_pos-9d9c8bd39c1e5bde.rmeta
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syntex_errors` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "273cfc105da2b30c10a96646c4d10f249e403908caaf0af1cedba112f13f2222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "273cfc105da2b30c10a96646c4d10f249e403908caaf0af1cedba112f13f2222", kill_on_drop: false }`
[INFO] [stdout] 273cfc105da2b30c10a96646c4d10f249e403908caaf0af1cedba112f13f2222