[INFO] cloning repository https://github.com/devSos17/rustBook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/devSos17/rustBook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevSos17%2FrustBook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevSos17%2FrustBook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd9f04ef190f272eaf5da3e10ad516124cc4fc5a
[INFO] building devSos17/rustBook against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevSos17%2FrustBook" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/devSos17/rustBook on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/devSos17/rustBook
[INFO] finished tweaking git repo https://github.com/devSos17/rustBook
[INFO] tweaked toml for git repo https://github.com/devSos17/rustBook written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/devSos17/rustBook 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399f46137e28c76915cc2841644b33dea4728e21e09471865da4f8535156ec15
[INFO] running `Command { std: "docker" "start" "-a" "399f46137e28c76915cc2841644b33dea4728e21e09471865da4f8535156ec15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399f46137e28c76915cc2841644b33dea4728e21e09471865da4f8535156ec15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399f46137e28c76915cc2841644b33dea4728e21e09471865da4f8535156ec15", kill_on_drop: false }`
[INFO] [stdout] 399f46137e28c76915cc2841644b33dea4728e21e09471865da4f8535156ec15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 362ec3f8c273e23cb5ddd2f544883b2831c7f1afb43ee0c4cd1b1da86a0cb7a7
[INFO] running `Command { std: "docker" "start" "-a" "362ec3f8c273e23cb5ddd2f544883b2831c7f1afb43ee0c4cd1b1da86a0cb7a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling getrandom v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/structs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guessing_game` is never used
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn guessing_game() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib` is never used
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn fib() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `converter` is never used
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn converter() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structs` is never used
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn structs() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib` is never used
[INFO] [stdout]  --> src/fibonacci.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fib(n: usize) -> (u128, usize) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib_ciclo` is never used
[INFO] [stdout]   --> src/fibonacci.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn fib_ciclo(n: usize, cuenta: &mut usize) -> u128 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEBUG` is never used
[INFO] [stdout]  --> src/guess_game.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const DEBUG: bool = false;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RANGE` is never used
[INFO] [stdout]  --> src/guess_game.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const RANGE: u8 = 100; // from 0 -> RANGE (lower than 255)
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `game` is never used
[INFO] [stdout]  --> src/guess_game.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn game() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guess` is never used
[INFO] [stdout]   --> src/guess_game.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn guess() -> Result<u8, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/structs.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct User {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `create`, `recreate_id`, and `update_mail` are never used
[INFO] [stdout]   --> src/structs.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl User {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 15 |     // TODO: OPTIMIZE WITH LIFETIMES (when i learn how to ? )
[INFO] [stdout] 16 |     pub fn create(username: String, alias: String) -> User {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn recreate_id(&mut self) -> &User {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn update_mail(&mut self, email: String) -> &User {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_email` is never used
[INFO] [stdout]   --> src/structs.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn gen_email(username: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `converter` is never used
[INFO] [stdout]  --> src/temp_converter.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn converter() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `c_to_f` is never used
[INFO] [stdout]  --> src/temp_converter.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn c_to_f(c: f64) -> f64 {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f_to_c` is never used
[INFO] [stdout]   --> src/temp_converter.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn f_to_c(f: f64) -> f64 {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `round` is never used
[INFO] [stdout]   --> src/temp_converter.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn round(num: f64, precision: f64) -> f64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "362ec3f8c273e23cb5ddd2f544883b2831c7f1afb43ee0c4cd1b1da86a0cb7a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362ec3f8c273e23cb5ddd2f544883b2831c7f1afb43ee0c4cd1b1da86a0cb7a7", kill_on_drop: false }`
[INFO] [stdout] 362ec3f8c273e23cb5ddd2f544883b2831c7f1afb43ee0c4cd1b1da86a0cb7a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fe824f0fcbc2128818286c28422cb27e9a8a47648ad402798cdef60091b20ea
[INFO] running `Command { std: "docker" "start" "-a" "8fe824f0fcbc2128818286c28422cb27e9a8a47648ad402798cdef60091b20ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/structs.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guessing_game` is never used
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn guessing_game() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fib` is never used
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn fib() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `converter` is never used
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn converter() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structs` is never used
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn structs() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEBUG` is never used
[INFO] [stdout]  --> src/guess_game.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const DEBUG: bool = false;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RANGE` is never used
[INFO] [stdout]  --> src/guess_game.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const RANGE: u8 = 100; // from 0 -> RANGE (lower than 255)
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `game` is never used
[INFO] [stdout]  --> src/guess_game.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn game() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `guess` is never used
[INFO] [stdout]   --> src/guess_game.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn guess() -> Result<u8, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/structs.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct User {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `create`, `recreate_id`, and `update_mail` are never used
[INFO] [stdout]   --> src/structs.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl User {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 15 |     // TODO: OPTIMIZE WITH LIFETIMES (when i learn how to ? )
[INFO] [stdout] 16 |     pub fn create(username: String, alias: String) -> User {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn recreate_id(&mut self) -> &User {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn update_mail(&mut self, email: String) -> &User {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_email` is never used
[INFO] [stdout]   --> src/structs.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn gen_email(username: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `converter` is never used
[INFO] [stdout]  --> src/temp_converter.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn converter() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "8fe824f0fcbc2128818286c28422cb27e9a8a47648ad402798cdef60091b20ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fe824f0fcbc2128818286c28422cb27e9a8a47648ad402798cdef60091b20ea", kill_on_drop: false }`
[INFO] [stdout] 8fe824f0fcbc2128818286c28422cb27e9a8a47648ad402798cdef60091b20ea