[INFO] fetching crate syntaxdot-encoders 0.2.0...
[INFO] checking syntaxdot-encoders-0.2.0 against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] extracting crate syntaxdot-encoders 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate syntaxdot-encoders 0.2.0 on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syntaxdot-encoders 0.2.0
[INFO] finished tweaking crates.io crate syntaxdot-encoders 0.2.0
[INFO] tweaked toml for crates.io crate syntaxdot-encoders 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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] cdf463d5697d925bd97a0b28841811b0decc0a4c7c1266baf5148fdf4b29ad23
[INFO] running `Command { std: "docker" "start" "-a" "cdf463d5697d925bd97a0b28841811b0decc0a4c7c1266baf5148fdf4b29ad23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdf463d5697d925bd97a0b28841811b0decc0a4c7c1266baf5148fdf4b29ad23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf463d5697d925bd97a0b28841811b0decc0a4c7c1266baf5148fdf4b29ad23", kill_on_drop: false }`
[INFO] [stdout] cdf463d5697d925bd97a0b28841811b0decc0a4c7c1266baf5148fdf4b29ad23
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 594d4a1f968f3e689512d824851f7be9ff76372dbc6edd314fd57b1f7abc2a6a
[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" "594d4a1f968f3e689512d824851f7be9ff76372dbc6edd314fd57b1f7abc2a6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling fst v0.4.5
[INFO] [stderr]     Checking seqalign v0.2.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling caseless v0.2.1
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking conllu v0.5.1
[INFO] [stderr]     Checking ohnomore v0.2.2
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking numberer v0.2.0
[INFO] [stderr]     Checking syntaxdot-encoders v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "594d4a1f968f3e689512d824851f7be9ff76372dbc6edd314fd57b1f7abc2a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594d4a1f968f3e689512d824851f7be9ff76372dbc6edd314fd57b1f7abc2a6a", kill_on_drop: false }`
[INFO] [stdout] 594d4a1f968f3e689512d824851f7be9ff76372dbc6edd314fd57b1f7abc2a6a