[INFO] cloning repository https://github.com/mdietrichstein/ir-search-engine-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdietrichstein/ir-search-engine-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdietrichstein%2Fir-search-engine-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdietrichstein%2Fir-search-engine-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b01b07bb3b39aadfd603e5b43969a5d637611ee
[INFO] checking mdietrichstein/ir-search-engine-rust against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdietrichstein%2Fir-search-engine-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mdietrichstein/ir-search-engine-rust
[INFO] finished tweaking git repo https://github.com/mdietrichstein/ir-search-engine-rust
[INFO] tweaked toml for git repo https://github.com/mdietrichstein/ir-search-engine-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mdietrichstein/ir-search-engine-rust on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mdietrichstein/ir-search-engine-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 634eb811321450d3c20e4c314759e120adb3b5bc9de615a576cc6b683732f041
[INFO] running `Command { std: "docker" "start" "-a" "634eb811321450d3c20e4c314759e120adb3b5bc9de615a576cc6b683732f041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "634eb811321450d3c20e4c314759e120adb3b5bc9de615a576cc6b683732f041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "634eb811321450d3c20e4c314759e120adb3b5bc9de615a576cc6b683732f041", kill_on_drop: false }`
[INFO] [stdout] 634eb811321450d3c20e4c314759e120adb3b5bc9de615a576cc6b683732f041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d642c6c41c0c678ba0361aae7c336dce2e3d91556fb95c5427d866a8e982bf0c
[INFO] running `Command { std: "docker" "start" "-a" "d642c6c41c0c678ba0361aae7c336dce2e3d91556fb95c5427d866a8e982bf0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]    Compiling encoding_rs v0.8.15
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking smallvec v0.6.8
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]     Checking farmhash v1.1.5
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking wordnet_stemmer v0.1.1
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking encoding_rs_io v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]    Compiling caseless v0.2.1
[INFO] [stderr]     Checking rust-stemmers v1.1.0
[INFO] [stderr]     Checking text_retrieval v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/preprocessing/mod.rs:36:29
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub type Preprocessor = Box<Fn(&[String]) -> Vec<String>>;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub type Preprocessor = Box<dyn Fn(&[String]) -> Vec<String>>;
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/preprocessing/mod.rs:36:29
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub type Preprocessor = Box<Fn(&[String]) -> Vec<String>>;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub type Preprocessor = Box<dyn Fn(&[String]) -> Vec<String>>;
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokenization/mod.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | ) -> Box<Iterator<Item = Token> + 'a> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 | ) -> Box<dyn Iterator<Item = Token> + 'a> {
[INFO] [stdout]    |          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tokenization/mod.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 | ) -> Box<Iterator<Item = Token> + 'a> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 | ) -> Box<dyn Iterator<Item = Token> + 'a> {
[INFO] [stdout]    |          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `TokenEntry` is never constructed
[INFO] [stdout]   --> src/indexing/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TokenEntry {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position`, `term`, `document_frequency`, and `postings` are never read
[INFO] [stdout]   --> src/indexing/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TokenEntry {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     position: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     term: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     document_frequency: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     postings: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenEntry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `TokenEntry` is never constructed
[INFO] [stdout]   --> src/indexing/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TokenEntry {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `position`, `term`, `document_frequency`, and `postings` are never read
[INFO] [stdout]   --> src/indexing/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TokenEntry {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 12 |     position: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     term: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     document_frequency: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     postings: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenEntry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `text_retrieval` (lib) due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `text_retrieval` (lib test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d642c6c41c0c678ba0361aae7c336dce2e3d91556fb95c5427d866a8e982bf0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d642c6c41c0c678ba0361aae7c336dce2e3d91556fb95c5427d866a8e982bf0c", kill_on_drop: false }`
[INFO] [stdout] d642c6c41c0c678ba0361aae7c336dce2e3d91556fb95c5427d866a8e982bf0c
