[INFO] fetching crate prometheus_folder_size_exporter 0.1.0...
[INFO] checking prometheus_folder_size_exporter-0.1.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate prometheus_folder_size_exporter 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate prometheus_folder_size_exporter 0.1.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus_folder_size_exporter 0.1.0
[INFO] finished tweaking crates.io crate prometheus_folder_size_exporter 0.1.0
[INFO] tweaked toml for crates.io crate prometheus_folder_size_exporter 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 33c3b6fd07a8c8d94837618dc58e4cd388ed3fa36beb4f748364ee54f52f8a12
[INFO] running `Command { std: "docker" "start" "-a" "33c3b6fd07a8c8d94837618dc58e4cd388ed3fa36beb4f748364ee54f52f8a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33c3b6fd07a8c8d94837618dc58e4cd388ed3fa36beb4f748364ee54f52f8a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33c3b6fd07a8c8d94837618dc58e4cd388ed3fa36beb4f748364ee54f52f8a12", kill_on_drop: false }`
[INFO] [stdout] 33c3b6fd07a8c8d94837618dc58e4cd388ed3fa36beb4f748364ee54f52f8a12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0cb786ae7bc31894479718d214d4d197dda283dbe9fc08719db9d850df4d7ae
[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" "f0cb786ae7bc31894479718d214d4d197dda283dbe9fc08719db9d850df4d7ae", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking prometheus_folder_size_exporter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/main.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `render_to_prometheus::RenderToPrometheus`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use render_to_prometheus::RenderToPrometheus;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error`, `info`, `warn`
[INFO] [stdout]  --> src/folder_scanner.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]   |                  ^^^^^  ^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `folder_scanner::FolderToScan`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use folder_scanner::FolderToScan;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/main.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `render_to_prometheus::RenderToPrometheus`
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use render_to_prometheus::RenderToPrometheus;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error`, `info`, `warn`
[INFO] [stdout]  --> src/folder_scanner.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]   |                  ^^^^^  ^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `folder_scanner::FolderToScan`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use folder_scanner::FolderToScan;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GenericError`
[INFO] [stdout]  --> src/exporter_error.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     GenericError {},
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnsupportedPathError`
[INFO] [stdout]  --> src/exporter_error.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     UnsupportedPathError { path: String },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnsupportedMethodError`
[INFO] [stdout]   --> src/exporter_error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     UnsupportedMethodError { verb: String },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `folders`
[INFO] [stdout]   --> src/folder_scanner.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn folders(&self) -> &[FolderToScan] {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GenericError`
[INFO] [stdout]  --> src/exporter_error.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     GenericError {},
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnsupportedPathError`
[INFO] [stdout]  --> src/exporter_error.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     UnsupportedPathError { path: String },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnsupportedMethodError`
[INFO] [stdout]   --> src/exporter_error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     UnsupportedMethodError { verb: String },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.19s
[INFO] running `Command { std: "docker" "inspect" "f0cb786ae7bc31894479718d214d4d197dda283dbe9fc08719db9d850df4d7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0cb786ae7bc31894479718d214d4d197dda283dbe9fc08719db9d850df4d7ae", kill_on_drop: false }`
[INFO] [stdout] f0cb786ae7bc31894479718d214d4d197dda283dbe9fc08719db9d850df4d7ae
