[INFO] cloning repository https://github.com/jamil4321/rocket_mongo_todo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamil4321/rocket_mongo_todo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamil4321%2Frocket_mongo_todo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamil4321%2Frocket_mongo_todo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9991fc3c34f6f2f54162fe03bc378ace8748503c
[INFO] testing jamil4321/rocket_mongo_todo against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamil4321%2Frocket_mongo_todo" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamil4321/rocket_mongo_todo on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/jamil4321/rocket_mongo_todo
[INFO] finished tweaking git repo https://github.com/jamil4321/rocket_mongo_todo
[INFO] tweaked toml for git repo https://github.com/jamil4321/rocket_mongo_todo written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jamil4321/rocket_mongo_todo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd7b19bfa626ea685195bc8dff4f0dd363b8a2c608ef25a9d622f2a5327628d3
[INFO] running `Command { std: "docker" "start" "-a" "cd7b19bfa626ea685195bc8dff4f0dd363b8a2c608ef25a9d622f2a5327628d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd7b19bfa626ea685195bc8dff4f0dd363b8a2c608ef25a9d622f2a5327628d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd7b19bfa626ea685195bc8dff4f0dd363b8a2c608ef25a9d622f2a5327628d3", kill_on_drop: false }`
[INFO] [stdout] cd7b19bfa626ea685195bc8dff4f0dd363b8a2c608ef25a9d622f2a5327628d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df27d92d27af51f99f6c2460741a96ea5d7d16620c85b1bc73df1be7fcf448a6
[INFO] running `Command { std: "docker" "start" "-a" "df27d92d27af51f99f6c2460741a96ea5d7d16620c85b1bc73df1be7fcf448a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling tinyvec v0.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling unic-common v0.7.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling unic-char-range v0.7.0
[INFO] [stderr]    Compiling bytes v0.5.5
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling futures-timer v2.0.2
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.33/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=a0686c3c4ba2b25e -C extra-filename=-a0686c3c4ba2b25e --out-dir /opt/rustwide/target/debug/build/syn-a0686c3c4ba2b25e -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "df27d92d27af51f99f6c2460741a96ea5d7d16620c85b1bc73df1be7fcf448a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df27d92d27af51f99f6c2460741a96ea5d7d16620c85b1bc73df1be7fcf448a6", kill_on_drop: false }`
[INFO] [stdout] df27d92d27af51f99f6c2460741a96ea5d7d16620c85b1bc73df1be7fcf448a6