[INFO] cloning repository https://github.com/elanini/musical-eureka
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elanini/musical-eureka" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felanini%2Fmusical-eureka", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felanini%2Fmusical-eureka'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a3f44927c88dfba1f1428a9d00f1911f2de422a
[INFO] checking elanini/musical-eureka against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felanini%2Fmusical-eureka" "/workspace/builds/worker-49/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-49/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elanini/musical-eureka on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elanini/musical-eureka
[INFO] finished tweaking git repo https://github.com/elanini/musical-eureka
[INFO] tweaked toml for git repo https://github.com/elanini/musical-eureka written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate git repo https://github.com/elanini/musical-eureka already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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 irc v0.13.6
[INFO] [stderr]   Downloaded reqwest v0.9.2
[INFO] [stderr]   Downloaded openssl-sys v0.9.36
[INFO] [stderr]   Downloaded hyper v0.12.11
[INFO] [stderr]   Downloaded tokio-mockstream v1.1.0
[INFO] [stderr]   Downloaded syn v0.15.9
[INFO] [stderr]   Downloaded openssl v0.10.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc7313644fa2fa47e67ba2650ec9adc1b6be94c47a0d9b7b41c1ea013a838a3b
[INFO] running `Command { std: "docker" "start" "-a" "bc7313644fa2fa47e67ba2650ec9adc1b6be94c47a0d9b7b41c1ea013a838a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc7313644fa2fa47e67ba2650ec9adc1b6be94c47a0d9b7b41c1ea013a838a3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7313644fa2fa47e67ba2650ec9adc1b6be94c47a0d9b7b41c1ea013a838a3b", kill_on_drop: false }`
[INFO] [stdout] bc7313644fa2fa47e67ba2650ec9adc1b6be94c47a0d9b7b41c1ea013a838a3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fd410ac060f673be99106103040ec786f2b3e437339667130bf59a373710eb2
[INFO] running `Command { std: "docker" "start" "-a" "0fd410ac060f673be99106103040ec786f2b3e437339667130bf59a373710eb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking futures v0.1.24
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling openssl v0.10.12
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling encoding_rs v0.8.10
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking htmlescape v0.3.1
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]     Checking lock_api v0.1.4
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking phf_shared v0.7.23
[INFO] [stderr]     Checking libflate v0.1.18
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling openssl-sys v0.9.36
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking http v0.1.13
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.9/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=84488b4259c3b3a4 -C extra-filename=-84488b4259c3b3a4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-aef50f7ef4b1e5cd.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-df282c5f87cd7a6b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-17df5e5ca0bb5bda.rmeta --cap-lints allow --cap-lints=forbid` (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" "0fd410ac060f673be99106103040ec786f2b3e437339667130bf59a373710eb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd410ac060f673be99106103040ec786f2b3e437339667130bf59a373710eb2", kill_on_drop: false }`
[INFO] [stdout] 0fd410ac060f673be99106103040ec786f2b3e437339667130bf59a373710eb2