[INFO] fetching crate file_graph-rs 0.1.0...
[INFO] testing file_graph-rs-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate file_graph-rs 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate file_graph-rs 0.1.0
[INFO] finished tweaking crates.io crate file_graph-rs 0.1.0
[INFO] tweaked toml for crates.io crate file_graph-rs 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate file_graph-rs 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8a8feaf77b133098ce316a1ccb02c1f4be54b8a6ae0967465b03ee0118c5458
[INFO] running `Command { std: "docker" "start" "-a" "b8a8feaf77b133098ce316a1ccb02c1f4be54b8a6ae0967465b03ee0118c5458", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8a8feaf77b133098ce316a1ccb02c1f4be54b8a6ae0967465b03ee0118c5458", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8a8feaf77b133098ce316a1ccb02c1f4be54b8a6ae0967465b03ee0118c5458", kill_on_drop: false }`
[INFO] [stdout] b8a8feaf77b133098ce316a1ccb02c1f4be54b8a6ae0967465b03ee0118c5458
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10abd1e2229865ccc37e1f3e8e2e5534ebbc2d50d9a3980b1872af6f9b13b622
[INFO] running `Command { std: "docker" "start" "-a" "10abd1e2229865ccc37e1f3e8e2e5534ebbc2d50d9a3980b1872af6f9b13b622", kill_on_drop: false }`
[INFO] [stderr]    Compiling file_graph-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/lib.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Result<T> = std::result::Result<T, FileTreeError>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FileTreeError` is never used
[INFO] [stdout]  --> src/lib.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum FileTreeError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Entry` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Entry {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EntryKind` is never used
[INFO] [stdout]   --> src/lib.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum EntryKind {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_entry` is never used
[INFO] [stdout]   --> src/lib.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn read_entry(path: &Path) -> Result<Entry> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_folder` is never used
[INFO] [stdout]   --> src/lib.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn read_folder<P: AsRef<Path>>(path: P) -> Result<Vec<Entry>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "10abd1e2229865ccc37e1f3e8e2e5534ebbc2d50d9a3980b1872af6f9b13b622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10abd1e2229865ccc37e1f3e8e2e5534ebbc2d50d9a3980b1872af6f9b13b622", kill_on_drop: false }`
[INFO] [stdout] 10abd1e2229865ccc37e1f3e8e2e5534ebbc2d50d9a3980b1872af6f9b13b622
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 657dd2f1a281fe5ede85668f6edfd2a93f04fcc9489bfb993de5c1972a4c5f86
[INFO] running `Command { std: "docker" "start" "-a" "657dd2f1a281fe5ede85668f6edfd2a93f04fcc9489bfb993de5c1972a4c5f86", kill_on_drop: false }`
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/lib.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Result<T> = std::result::Result<T, FileTreeError>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FileTreeError` is never used
[INFO] [stdout]  --> src/lib.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum FileTreeError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling file_graph-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Entry` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Entry {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EntryKind` is never used
[INFO] [stdout]   --> src/lib.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum EntryKind {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_entry` is never used
[INFO] [stdout]   --> src/lib.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn read_entry(path: &Path) -> Result<Entry> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_folder` is never used
[INFO] [stdout]   --> src/lib.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn read_folder<P: AsRef<Path>>(path: P) -> Result<Vec<Entry>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]  --> src/lib.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Result<T> = std::result::Result<T, FileTreeError>;
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FileTreeError` is never used
[INFO] [stdout]  --> src/lib.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum FileTreeError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Entry` is never constructed
[INFO] [stdout]   --> src/lib.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Entry {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EntryKind` is never used
[INFO] [stdout]   --> src/lib.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum EntryKind {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_entry` is never used
[INFO] [stdout]   --> src/lib.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn read_entry(path: &Path) -> Result<Entry> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_folder` is never used
[INFO] [stdout]   --> src/lib.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn read_folder<P: AsRef<Path>>(path: P) -> Result<Vec<Entry>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "657dd2f1a281fe5ede85668f6edfd2a93f04fcc9489bfb993de5c1972a4c5f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657dd2f1a281fe5ede85668f6edfd2a93f04fcc9489bfb993de5c1972a4c5f86", kill_on_drop: false }`
[INFO] [stdout] 657dd2f1a281fe5ede85668f6edfd2a93f04fcc9489bfb993de5c1972a4c5f86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 447210fe7e9c964e1a4f932b91e0ef50eb8f4a02d332c6ce17a5309c3a87dfe8
[INFO] running `Command { std: "docker" "start" "-a" "447210fe7e9c964e1a4f932b91e0ef50eb8f4a02d332c6ce17a5309c3a87dfe8", kill_on_drop: false }`
[INFO] [stderr] warning: type alias `Result` is never used
[INFO] [stderr]  --> src/lib.rs:4:6
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Result<T> = std::result::Result<T, FileTreeError>;
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `FileTreeError` is never used
[INFO] [stderr]  --> src/lib.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 | enum FileTreeError {
[INFO] [stderr]   |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Entry` is never constructed
[INFO] [stderr]   --> src/lib.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct Entry {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `EntryKind` is never used
[INFO] [stderr]   --> src/lib.rs:30:6
[INFO] [stderr]    |
[INFO] [stderr] 30 | enum EntryKind {
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_entry` is never used
[INFO] [stderr]   --> src/lib.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn read_entry(path: &Path) -> Result<Entry> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_folder` is never used
[INFO] [stderr]   --> src/lib.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn read_folder<P: AsRef<Path>>(path: P) -> Result<Vec<Entry>> {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `file_graph-rs` (lib) generated 6 warnings
[INFO] [stderr] warning: `file_graph-rs` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/file_graph_rs-f2cebb63a292c39a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests file_graph_rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "447210fe7e9c964e1a4f932b91e0ef50eb8f4a02d332c6ce17a5309c3a87dfe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "447210fe7e9c964e1a4f932b91e0ef50eb8f4a02d332c6ce17a5309c3a87dfe8", kill_on_drop: false }`
[INFO] [stdout] 447210fe7e9c964e1a4f932b91e0ef50eb8f4a02d332c6ce17a5309c3a87dfe8