[INFO] fetching crate syntaxdot-encoders 0.1.0...
[INFO] checking syntaxdot-encoders-0.1.0 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate syntaxdot-encoders 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate syntaxdot-encoders 0.1.0 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syntaxdot-encoders 0.1.0
[INFO] finished tweaking crates.io crate syntaxdot-encoders 0.1.0
[INFO] tweaked toml for crates.io crate syntaxdot-encoders 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded numberer v0.2.0
[INFO] [stderr]   Downloaded ohnomore v0.2.2
[INFO] [stderr]   Downloaded edit_tree v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b080c325656ae0f61876fd4685c64a5143e6bc26fe35ef1e735cdc389602236d
[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" "b080c325656ae0f61876fd4685c64a5143e6bc26fe35ef1e735cdc389602236d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b080c325656ae0f61876fd4685c64a5143e6bc26fe35ef1e735cdc389602236d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b080c325656ae0f61876fd4685c64a5143e6bc26fe35ef1e735cdc389602236d", kill_on_drop: false }`
[INFO] [stdout] b080c325656ae0f61876fd4685c64a5143e6bc26fe35ef1e735cdc389602236d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 0cf893dc0036958e5d723faf90eb9466d7990d5be56a4e53ca15ddbb35f6bfe8
[INFO] running `Command { std: "docker" "start" "-a" "0cf893dc0036958e5d723faf90eb9466d7990d5be56a4e53ca15ddbb35f6bfe8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling fst v0.4.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking seqalign v0.2.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling caseless v0.2.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[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 v1.0.117
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking numberer v0.2.0
[INFO] [stderr]     Checking edit_tree v0.1.2
[INFO] [stderr]     Checking syntaxdot-encoders v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.83s
[INFO] running `Command { std: "docker" "inspect" "0cf893dc0036958e5d723faf90eb9466d7990d5be56a4e53ca15ddbb35f6bfe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cf893dc0036958e5d723faf90eb9466d7990d5be56a4e53ca15ddbb35f6bfe8", kill_on_drop: false }`
[INFO] [stdout] 0cf893dc0036958e5d723faf90eb9466d7990d5be56a4e53ca15ddbb35f6bfe8