[INFO] cloning repository https://github.com/pwwolff/RussianRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pwwolff/RussianRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwwolff%2FRussianRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwwolff%2FRussianRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dbaa6e5223a977c6ee44408dc4d1335d7faf013b
[INFO] checking pwwolff/RussianRust against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwwolff%2FRussianRust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pwwolff/RussianRust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pwwolff/RussianRust
[INFO] finished tweaking git repo https://github.com/pwwolff/RussianRust
[INFO] tweaked toml for git repo https://github.com/pwwolff/RussianRust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pwwolff/RussianRust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a3e5115aba19739e9261aa25ac179ca177612978d5749974a0eafb1ba560a36
[INFO] running `Command { std: "docker" "start" "-a" "2a3e5115aba19739e9261aa25ac179ca177612978d5749974a0eafb1ba560a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a3e5115aba19739e9261aa25ac179ca177612978d5749974a0eafb1ba560a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a3e5115aba19739e9261aa25ac179ca177612978d5749974a0eafb1ba560a36", kill_on_drop: false }`
[INFO] [stdout] 2a3e5115aba19739e9261aa25ac179ca177612978d5749974a0eafb1ba560a36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f4b1de6498e343541dd1bc584f77226e711434089befe83f573da8c1e55bac7
[INFO] running `Command { std: "docker" "start" "-a" "3f4b1de6498e343541dd1bc584f77226e711434089befe83f573da8c1e55bac7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking config v0.11.0
[INFO] [stderr]     Checking RussianRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `wiki_id` is never read
[INFO] [stdout]   --> src/wiktionary_parser.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct WikiPage {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 57 |     wiki_id: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_template` is never used
[INFO] [stdout]   --> src/wiktionary_parser.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl WikiPage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 63 |     fn is_template(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `wiki_id` is never read
[INFO] [stdout]   --> src/wiktionary_parser.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct WikiPage {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 57 |     wiki_id: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_template` is never used
[INFO] [stdout]   --> src/wiktionary_parser.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl WikiPage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 63 |     fn is_template(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.96s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "3f4b1de6498e343541dd1bc584f77226e711434089befe83f573da8c1e55bac7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f4b1de6498e343541dd1bc584f77226e711434089befe83f573da8c1e55bac7", kill_on_drop: false }`
[INFO] [stdout] 3f4b1de6498e343541dd1bc584f77226e711434089befe83f573da8c1e55bac7
[INFO] checking pwwolff/RussianRust against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwwolff%2FRussianRust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pwwolff/RussianRust on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pwwolff/RussianRust
[INFO] finished tweaking git repo https://github.com/pwwolff/RussianRust
[INFO] tweaked toml for git repo https://github.com/pwwolff/RussianRust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/pwwolff/RussianRust 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 552df9686637ff608c563c2335440632785501e793065d68277cdb8b20686911
[INFO] running `Command { std: "docker" "start" "-a" "552df9686637ff608c563c2335440632785501e793065d68277cdb8b20686911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "552df9686637ff608c563c2335440632785501e793065d68277cdb8b20686911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "552df9686637ff608c563c2335440632785501e793065d68277cdb8b20686911", kill_on_drop: false }`
[INFO] [stdout] 552df9686637ff608c563c2335440632785501e793065d68277cdb8b20686911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a229509a01ebd84ef803bb47bba57044614348ce1260f4aafd9e20266037922
[INFO] running `Command { std: "docker" "start" "-a" "0a229509a01ebd84ef803bb47bba57044614348ce1260f4aafd9e20266037922", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking config v0.11.0
[INFO] [stderr]     Checking RussianRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `wiki_id` is never read
[INFO] [stdout]   --> src/wiktionary_parser.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct WikiPage {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 57 |     wiki_id: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_template` is never used
[INFO] [stdout]   --> src/wiktionary_parser.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl WikiPage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 63 |     fn is_template(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `wiki_id` is never read
[INFO] [stdout]   --> src/wiktionary_parser.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct WikiPage {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 57 |     wiki_id: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_template` is never used
[INFO] [stdout]   --> src/wiktionary_parser.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl WikiPage {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 63 |     fn is_template(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.40s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "0a229509a01ebd84ef803bb47bba57044614348ce1260f4aafd9e20266037922", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a229509a01ebd84ef803bb47bba57044614348ce1260f4aafd9e20266037922", kill_on_drop: false }`
[INFO] [stdout] 0a229509a01ebd84ef803bb47bba57044614348ce1260f4aafd9e20266037922