[INFO] cloning repository https://github.com/masinc/nlp100-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/masinc/nlp100-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasinc%2Fnlp100-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasinc%2Fnlp100-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4fa9ddc21ff46b00aa4d55a93113fa9c0ede2c8
[INFO] checking masinc/nlp100-rust against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasinc%2Fnlp100-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/masinc/nlp100-rust
[INFO] finished tweaking git repo https://github.com/masinc/nlp100-rust
[INFO] tweaked toml for git repo https://github.com/masinc/nlp100-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/masinc/nlp100-rust on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/masinc/nlp100-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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.25
[INFO] [stderr]   Downloaded thiserror-impl v1.0.25
[INFO] [stderr]   Downloaded itertools v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023
[INFO] running `Command { std: "docker" "start" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking nlp100-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Problem00` is never constructed
[INFO] [stdout]  --> src/ch01/problem00.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Problem00 {}
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem01` is never constructed
[INFO] [stdout]  --> src/ch01/problem01.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Problem01;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem02` is never constructed
[INFO] [stdout]  --> src/ch01/problem02.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Problem02;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem03` is never constructed
[INFO] [stdout]  --> src/ch01/problem03.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Problem03;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> src/ch01/problem03.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem04` is never constructed
[INFO] [stdout]  --> src/ch01/problem04.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Problem04;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Args` is never constructed
[INFO] [stdout]  --> src/ch01/problem04.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Args {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem05` is never constructed
[INFO] [stdout]  --> src/ch01/problem05.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Problem05;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Args` is never constructed
[INFO] [stdout]   --> src/ch01/problem05.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Args {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Result` is never constructed
[INFO] [stdout]   --> src/ch01/problem05.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) struct Result {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem06` is never constructed
[INFO] [stdout]  --> src/ch01/problem06.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Problem06;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Args` is never constructed
[INFO] [stdout]   --> src/ch01/problem06.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Args {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Result` is never constructed
[INFO] [stdout]   --> src/ch01/problem06.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Result {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem07` is never constructed
[INFO] [stdout]  --> src/ch01/problem07.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Problem07;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Args` is never constructed
[INFO] [stdout]  --> src/ch01/problem07.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Args {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Problem08` is never constructed
[INFO] [stdout]  --> src/ch01/problem08.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Problem08;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cipher` is never used
[INFO] [stdout]  --> src/ch01/problem08.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn cipher(text: String) -> String {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `Command { std: "docker" "inspect" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023", kill_on_drop: false }`
[INFO] [stdout] 17ec7a2938453793e61ef8bfd49936c5a6d529eb448c55cc460a55e32aee6023
