[INFO] fetching crate rusta 0.0.2...
[INFO] checking rusta-0.0.2 against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] extracting crate rusta 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rusta 0.0.2 on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusta 0.0.2
[INFO] finished tweaking crates.io crate rusta 0.0.2
[INFO] tweaked toml for crates.io crate rusta 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 114e570110ea434fecf52e237db5de133e68c63d0c5bec1f45979f476006c933
[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" "114e570110ea434fecf52e237db5de133e68c63d0c5bec1f45979f476006c933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "114e570110ea434fecf52e237db5de133e68c63d0c5bec1f45979f476006c933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "114e570110ea434fecf52e237db5de133e68c63d0c5bec1f45979f476006c933", kill_on_drop: false }`
[INFO] [stdout] 114e570110ea434fecf52e237db5de133e68c63d0c5bec1f45979f476006c933
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8db7ce2f5d6e760552fbc9c2f264fd1b1b656f153cb508d8f0e8470089e73613
[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" "8db7ce2f5d6e760552fbc9c2f264fd1b1b656f153cb508d8f0e8470089e73613", kill_on_drop: false }`
[INFO] [stderr]     Checking rusta v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `FileReadMemorySettings`
[INFO] [stdout]  --> src/config/mod.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum FileReadMemorySettings {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FileReadConcurrencySettings`
[INFO] [stdout]   --> src/config/mod.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum FileReadConcurrencySettings {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ParsingPropertiesMode`
[INFO] [stdout]   --> src/config/mod.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum ParsingPropertiesMode {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParsingSettings`
[INFO] [stdout]   --> src/config/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct ParsingSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_parser_builder`
[INFO] [stdout]  --> src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn new_parser_builder() -> config::ParsingSettings {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FileReadMemorySettings`
[INFO] [stdout]  --> src/config/mod.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum FileReadMemorySettings {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `FileReadConcurrencySettings`
[INFO] [stdout]   --> src/config/mod.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum FileReadConcurrencySettings {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ParsingPropertiesMode`
[INFO] [stdout]   --> src/config/mod.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum ParsingPropertiesMode {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParsingSettings`
[INFO] [stdout]   --> src/config/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct ParsingSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_parser_builder`
[INFO] [stdout]  --> src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn new_parser_builder() -> config::ParsingSettings {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8db7ce2f5d6e760552fbc9c2f264fd1b1b656f153cb508d8f0e8470089e73613", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db7ce2f5d6e760552fbc9c2f264fd1b1b656f153cb508d8f0e8470089e73613", kill_on_drop: false }`
[INFO] [stdout] 8db7ce2f5d6e760552fbc9c2f264fd1b1b656f153cb508d8f0e8470089e73613