[INFO] cloning repository https://github.com/Aiyyskhan/rust_tutorials
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aiyyskhan/rust_tutorials" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAiyyskhan%2Frust_tutorials", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAiyyskhan%2Frust_tutorials'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88ba0e961108da3cc91bf227f2447ffdf853c622
[INFO] checking Aiyyskhan/rust_tutorials against master#568b11762723b001bfa693d0f21c5dad01d4e813 for pr-149058
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAiyyskhan%2Frust_tutorials" "/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/Aiyyskhan/rust_tutorials
[INFO] finished tweaking git repo https://github.com/Aiyyskhan/rust_tutorials
[INFO] tweaked toml for git repo https://github.com/Aiyyskhan/rust_tutorials written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aiyyskhan/rust_tutorials on toolchain 568b11762723b001bfa693d0f21c5dad01d4e813
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+568b11762723b001bfa693d0f21c5dad01d4e813" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Aiyyskhan/rust_tutorials 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" "+568b11762723b001bfa693d0f21c5dad01d4e813" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+568b11762723b001bfa693d0f21c5dad01d4e813" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e26cda12ba0d3d33dc5fc77c88e28239235abad21141b8ae1421ff6a218acd0a
[INFO] running `Command { std: "docker" "start" "-a" "e26cda12ba0d3d33dc5fc77c88e28239235abad21141b8ae1421ff6a218acd0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e26cda12ba0d3d33dc5fc77c88e28239235abad21141b8ae1421ff6a218acd0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26cda12ba0d3d33dc5fc77c88e28239235abad21141b8ae1421ff6a218acd0a", kill_on_drop: false }`
[INFO] [stdout] e26cda12ba0d3d33dc5fc77c88e28239235abad21141b8ae1421ff6a218acd0a
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+568b11762723b001bfa693d0f21c5dad01d4e813" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a14093aeb4689933c76c94cb8224e045c2fee3c2de5d4e18dbceda71d5a9be6
[INFO] running `Command { std: "docker" "start" "-a" "0a14093aeb4689933c76c94cb8224e045c2fee3c2de5d4e18dbceda71d5a9be6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust_tutorials v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ip_v6`
[INFO] [stdout]   --> src/l9_enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let ip_v6 = IpAddr::V6(String::from("::1"));
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_v6`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_v6`
[INFO] [stdout]   --> src/l9_enum.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let ip_v6 = IpAddr::V6(String::from("::1"));
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_v6`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddKind` is never used
[INFO] [stdout]  --> src/l9_enum.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum IpAddKind {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_1` is never used
[INFO] [stdout]  --> src/l9_enum.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn exmpl_1() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]   --> src/l9_enum.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum IpAddr {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_2` is never used
[INFO] [stdout]   --> src/l9_enum.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn exmpl_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/l9_enum.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `describe` is never used
[INFO] [stdout]   --> src/l9_enum.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 40 |     fn describe(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_3` is never used
[INFO] [stdout]   --> src/l9_enum.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn exmpl_3() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_4` is never used
[INFO] [stdout]   --> src/l9_enum.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn exmpl_4() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alabama` is never constructed
[INFO] [stdout]    --> src/l9_enum.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | enum USState {
[INFO] [stdout]     |      ------- variant in this enum
[INFO] [stdout] 102 |     Alabama,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `USState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed
[INFO] [stdout]    --> src/l9_enum.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | enum Coin {
[INFO] [stdout]     |      ---- variants in this enum
[INFO] [stdout] 107 |     Penny,
[INFO] [stdout] 108 |     Nickel,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 109 |     Dime,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddKind` is never used
[INFO] [stdout]  --> src/l9_enum.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum IpAddKind {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_1` is never used
[INFO] [stdout]  --> src/l9_enum.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn exmpl_1() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]   --> src/l9_enum.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum IpAddr {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_2` is never used
[INFO] [stdout]   --> src/l9_enum.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn exmpl_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/l9_enum.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `describe` is never used
[INFO] [stdout]   --> src/l9_enum.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 40 |     fn describe(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_3` is never used
[INFO] [stdout]   --> src/l9_enum.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn exmpl_3() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exmpl_4` is never used
[INFO] [stdout]   --> src/l9_enum.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn exmpl_4() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alabama` is never constructed
[INFO] [stdout]    --> src/l9_enum.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | enum USState {
[INFO] [stdout]     |      ------- variant in this enum
[INFO] [stdout] 102 |     Alabama,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `USState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed
[INFO] [stdout]    --> src/l9_enum.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | enum Coin {
[INFO] [stdout]     |      ---- variants in this enum
[INFO] [stdout] 107 |     Penny,
[INFO] [stdout] 108 |     Nickel,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 109 |     Dime,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.26s
[INFO] running `Command { std: "docker" "inspect" "0a14093aeb4689933c76c94cb8224e045c2fee3c2de5d4e18dbceda71d5a9be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a14093aeb4689933c76c94cb8224e045c2fee3c2de5d4e18dbceda71d5a9be6", kill_on_drop: false }`
[INFO] [stdout] 0a14093aeb4689933c76c94cb8224e045c2fee3c2de5d4e18dbceda71d5a9be6
