[INFO] cloning repository https://github.com/arymoraes/rust-discord-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arymoraes/rust-discord-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farymoraes%2Frust-discord-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farymoraes%2Frust-discord-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb7634981b98bd4811432c9e656cd1af198885fb
[INFO] building arymoraes/rust-discord-bot against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farymoraes%2Frust-discord-bot" "/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/arymoraes/rust-discord-bot on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arymoraes/rust-discord-bot
[INFO] finished tweaking git repo https://github.com/arymoraes/rust-discord-bot
[INFO] tweaked toml for git repo https://github.com/arymoraes/rust-discord-bot written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/arymoraes/rust-discord-bot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (serenity) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db4550f31f5f3f52cb363dfa5d57c8d495ee2def5956a77a850c32fe1425e785
[INFO] running `Command { std: "docker" "start" "-a" "db4550f31f5f3f52cb363dfa5d57c8d495ee2def5956a77a850c32fe1425e785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db4550f31f5f3f52cb363dfa5d57c8d495ee2def5956a77a850c32fe1425e785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db4550f31f5f3f52cb363dfa5d57c8d495ee2def5956a77a850c32fe1425e785", kill_on_drop: false }`
[INFO] [stdout] db4550f31f5f3f52cb363dfa5d57c8d495ee2def5956a77a850c32fe1425e785
[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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b3c05de190d8ce46327c300ee0cdf45ae7cd71537d66612ec261b43dc29fce
[INFO] running `Command { std: "docker" "start" "-a" "f1b3c05de190d8ce46327c300ee0cdf45ae7cd71537d66612ec261b43dc29fce", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (serenity) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling rustls v0.20.4
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling serenity v0.10.10
[INFO] [stderr]    Compiling ipnet v2.4.0
[INFO] [stderr]    Compiling typemap_rev v0.1.5
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling tracing-core v0.1.23
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling rustls-pemfile v0.2.1
[INFO] [stderr]    Compiling input_buffer v0.3.1
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling mio v0.8.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.86/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 --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=90bcff6b99beb4f9 -C extra-filename=-90bcff6b99beb4f9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d937f1f82ffb437d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4040e84c0ddb8645.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f1b3c05de190d8ce46327c300ee0cdf45ae7cd71537d66612ec261b43dc29fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b3c05de190d8ce46327c300ee0cdf45ae7cd71537d66612ec261b43dc29fce", kill_on_drop: false }`
[INFO] [stdout] f1b3c05de190d8ce46327c300ee0cdf45ae7cd71537d66612ec261b43dc29fce