[INFO] cloning repository https://github.com/busarovalex/cryptogram [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/busarovalex/cryptogram" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fcryptogram", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fcryptogram'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c906585a70cec46796fa855177a69e4a41e19cd5 [INFO] checking busarovalex/cryptogram against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbusarovalex%2Fcryptogram" "/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/busarovalex/cryptogram on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/busarovalex/cryptogram [INFO] finished tweaking git repo https://github.com/busarovalex/cryptogram [INFO] tweaked toml for git repo https://github.com/busarovalex/cryptogram written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/busarovalex/cryptogram 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded structopt v0.1.7 [INFO] [stderr] Downloaded quote v0.3.15 [INFO] [stderr] Downloaded structopt-derive v0.1.6 [INFO] [stderr] Downloaded vec_map v0.8.0 [INFO] [stderr] Downloaded unicode-xid v0.0.4 [INFO] [stderr] Downloaded synom v0.11.3 [INFO] [stderr] Downloaded void v1.0.2 [INFO] [stderr] Downloaded unreachable v1.0.0 [INFO] [stderr] Downloaded bitflags v1.0.1 [INFO] [stderr] Downloaded syn v0.11.11 [INFO] [stderr] Downloaded clap v2.29.2 [INFO] [stderr] Downloaded lazy_static v1.0.0 [INFO] [stderr] Downloaded quick-error v1.2.1 [INFO] [stderr] Downloaded humantime v1.1.1 [INFO] [stderr] Downloaded aho-corasick v0.6.4 [INFO] [stderr] Downloaded memchr v2.0.1 [INFO] [stderr] Downloaded regex-syntax v0.5.5 [INFO] [stderr] Downloaded regex v0.2.10 [INFO] [stderr] Downloaded libc v0.2.36 [INFO] [stderr] Downloaded ucd-util v0.1.1 [INFO] [stderr] Downloaded termcolor v0.3.6 [INFO] [stderr] Downloaded winapi v0.3.4 [INFO] [stderr] Downloaded env_logger v0.5.9 [INFO] [stderr] Downloaded cfg-if v0.1.2 [INFO] [stderr] Downloaded log v0.4.1 [INFO] [stderr] Downloaded ansi_term v0.10.2 [INFO] [stderr] Downloaded termion v1.5.1 [INFO] [stderr] Downloaded strsim v0.6.0 [INFO] [stderr] Downloaded textwrap v0.9.0 [INFO] [stderr] Downloaded thread_local v0.3.5 [INFO] [stderr] Downloaded utf8-ranges v1.0.0 [INFO] [stderr] Downloaded wincolor v0.1.6 [INFO] [stderr] Downloaded redox_syscall v0.1.37 [INFO] [stderr] Downloaded atty v0.2.6 [INFO] [stderr] Downloaded unicode-width v0.1.4 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] df4da01e19ea440a4bc8ecbba19c746fc470d81d552332ca25516b96b2abddea [INFO] running `Command { std: "docker" "start" "-a" "df4da01e19ea440a4bc8ecbba19c746fc470d81d552332ca25516b96b2abddea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "df4da01e19ea440a4bc8ecbba19c746fc470d81d552332ca25516b96b2abddea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df4da01e19ea440a4bc8ecbba19c746fc470d81d552332ca25516b96b2abddea", kill_on_drop: false }` [INFO] [stdout] df4da01e19ea440a4bc8ecbba19c746fc470d81d552332ca25516b96b2abddea [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8279cb37c80b4cd408ccf498ac621653b318dcf0874c1bbde9ff139aea168fb8 [INFO] running `Command { std: "docker" "start" "-a" "8279cb37c80b4cd408ccf498ac621653b318dcf0874c1bbde9ff139aea168fb8", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.36 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Checking ucd-util v0.1.1 [INFO] [stderr] Checking lazy_static v1.0.0 [INFO] [stderr] Checking unicode-width v0.1.4 [INFO] [stderr] Compiling regex v0.2.10 [INFO] [stderr] Checking ansi_term v0.10.2 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking quick-error v1.2.1 [INFO] [stderr] Checking bitflags v1.0.1 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking vec_map v0.8.0 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking termcolor v0.3.6 [INFO] [stderr] Checking log v0.4.1 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking humantime v1.1.1 [INFO] [stderr] Checking thread_local v0.3.5 [INFO] [stderr] Checking regex-syntax v0.5.5 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking atty v0.2.6 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking clap v2.29.2 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Compiling structopt-derive v0.1.6 [INFO] [stderr] Checking structopt v0.1.7 [INFO] [stderr] Checking env_logger v0.5.9 [INFO] [stderr] Checking word-search v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/vocabulary.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/decipher.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/vocabulary.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/decipher.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::iter::Iterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(underscore_lifetimes)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(underscore_lifetimes)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(inclusive_range_syntax)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/main.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(inclusive_range_syntax)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `word_count` is never read [INFO] [stdout] --> src/cipher_text.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct CipherText { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 8 | text: String, [INFO] [stdout] 9 | word_count: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CipherText` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `word_count` is never read [INFO] [stdout] --> src/cipher_text.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct CipherText { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 8 | text: String, [INFO] [stdout] 9 | word_count: usize, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `CipherText` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/cipher_text.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | ::std::mem::replace(&mut self.conditions, reordered_conditions); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 76 | let _ = ::std::mem::replace(&mut self.conditions, reordered_conditions); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/cipher_text.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | ::std::mem::replace(&mut self.conditions, reordered_conditions); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 76 | let _ = ::std::mem::replace(&mut self.conditions, reordered_conditions); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.79s [INFO] running `Command { std: "docker" "inspect" "8279cb37c80b4cd408ccf498ac621653b318dcf0874c1bbde9ff139aea168fb8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8279cb37c80b4cd408ccf498ac621653b318dcf0874c1bbde9ff139aea168fb8", kill_on_drop: false }` [INFO] [stdout] 8279cb37c80b4cd408ccf498ac621653b318dcf0874c1bbde9ff139aea168fb8