[INFO] cloning repository https://github.com/4got/rust-101
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/4got/rust-101" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e0adce41a374b2fb91d96dd71d58734ca87d33d
[INFO] checking 4got/rust-101 against master#c8551d3c63c51f290cf1dc9dc4714249ea849fd1 for pr-148946
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/4got/rust-101
[INFO] finished tweaking git repo https://github.com/4got/rust-101
[INFO] tweaked toml for git repo https://github.com/4got/rust-101 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/4got/rust-101 on toolchain c8551d3c63c51f290cf1dc9dc4714249ea849fd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/4got/rust-101 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" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 194696ec1bae0df5b7723440410e3ceca16947f458647a425ff081528999b96e
[INFO] running `Command { std: "docker" "start" "-a" "194696ec1bae0df5b7723440410e3ceca16947f458647a425ff081528999b96e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "194696ec1bae0df5b7723440410e3ceca16947f458647a425ff081528999b96e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "194696ec1bae0df5b7723440410e3ceca16947f458647a425ff081528999b96e", kill_on_drop: false }`
[INFO] [stdout] 194696ec1bae0df5b7723440410e3ceca16947f458647a425ff081528999b96e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f24f672feeb2017b1b5f00a08dc7cd560423d97ef9ae2a02b9d8e2ea68cfa8b7
[INFO] running `Command { std: "docker" "start" "-a" "f24f672feeb2017b1b5f00a08dc7cd560423d97ef9ae2a02b9d8e2ea68cfa8b7", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `NumberOrNothing` is never used
[INFO] [stdout]  --> src/part02.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | type NumberOrNothing = SomethingOrNothing<i32>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NumberOrNothing` is never used
[INFO] [stdout]  --> src/part02.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | type NumberOrNothing = SomethingOrNothing<i32>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FloatOrNothing` is never used
[INFO] [stdout]  --> src/part02.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type FloatOrNothing = SomethingOrNothing<f32>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/part02.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl NumberOrNothing {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 23 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FloatOrNothing` is never used
[INFO] [stdout]  --> src/part02.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type FloatOrNothing = SomethingOrNothing<f32>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/part02.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl FloatOrNothing {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 31 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/part02.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl NumberOrNothing {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 23 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/part02.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_vec` is never used
[INFO] [stdout]  --> src/part03.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn read_vec() -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/part02.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl FloatOrNothing {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 31 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/part02.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_vec` is never used
[INFO] [stdout]  --> src/part03.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn read_vec() -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "f24f672feeb2017b1b5f00a08dc7cd560423d97ef9ae2a02b9d8e2ea68cfa8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f24f672feeb2017b1b5f00a08dc7cd560423d97ef9ae2a02b9d8e2ea68cfa8b7", kill_on_drop: false }`
[INFO] [stdout] f24f672feeb2017b1b5f00a08dc7cd560423d97ef9ae2a02b9d8e2ea68cfa8b7
