[INFO] cloning repository https://github.com/elycruz/rust-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elycruz/rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felycruz%2Frust-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felycruz%2Frust-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 437000fc30c4b3e08e8c37934a38856fc5960efd
[INFO] checking elycruz/rust-book against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felycruz%2Frust-book" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elycruz/rust-book on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elycruz/rust-book
[INFO] finished tweaking git repo https://github.com/elycruz/rust-book
[INFO] tweaked toml for git repo https://github.com/elycruz/rust-book written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/elycruz/rust-book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad6bf13064c0ea23c5c8ba933797ceb295992830ad3c983845443b01dd93ea00
[INFO] running `Command { std: "docker" "start" "-a" "ad6bf13064c0ea23c5c8ba933797ceb295992830ad3c983845443b01dd93ea00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad6bf13064c0ea23c5c8ba933797ceb295992830ad3c983845443b01dd93ea00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6bf13064c0ea23c5c8ba933797ceb295992830ad3c983845443b01dd93ea00", kill_on_drop: false }`
[INFO] [stdout] ad6bf13064c0ea23c5c8ba933797ceb295992830ad3c983845443b01dd93ea00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3568f1468c5356f23cda1b5f3320ab6b25a085c96b917b36894d83de76caf6fa
[INFO] running `Command { std: "docker" "start" "-a" "3568f1468c5356f23cda1b5f3320ab6b25a085c96b917b36894d83de76caf6fa", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rust-book v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating chp1/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp3/convert_temps.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp3/twelve_days_of_christmas.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp8/piglatin.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp12/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp2/guessing_game.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp16/chp16_1.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp16/chp16_2.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp8/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp8/mean_and_mode.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp8/company_directory.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp3/nth_fib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating chp3/fib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed chp16/chp16_1.rs (1 fix)
[INFO] [stderr]        Fixed chp8/mean_and_mode.rs (1 fix)
[INFO] [stdout] warning: function is never used: `maximum`
[INFO] [stdout]   --> chp8/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn maximum<T: Ord + Debug>(xs: &Vec<T>) -> Option<&T> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed chp8/company_directory.rs (1 fix)
[INFO] [stdout] warning: static is never used: `FIVE_O`
[INFO] [stdout]  --> chp3/fib_lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | static FIVE_O: f64 = 5.0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `O_FIVE`
[INFO] [stdout]  --> chp3/fib_lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | static O_FIVE: f64 = 0.5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_phi`
[INFO] [stdout]   --> chp3/fib_lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn get_phi() -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_fib`
[INFO] [stdout]   --> chp3/fib_lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn nth_fib(nth: i32) -> i64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mean`
[INFO] [stdout]  --> chp8/mean_and_mode.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn mean(v: &Vec<f64>) -> f64 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mode`
[INFO] [stdout]   --> chp8/mean_and_mode.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn mode(vs: &Vec<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.66s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rust-book v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: function is never used: `mean`
[INFO] [stdout]  --> chp8/mean_and_mode.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn mean(v: &Vec<f64>) -> f64 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mode`
[INFO] [stdout]   --> chp8/mean_and_mode.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn mode(vs: &Vec<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `FIVE_O`
[INFO] [stdout]  --> chp3/fib_lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | static FIVE_O: f64 = 5.0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `O_FIVE`
[INFO] [stdout]  --> chp3/fib_lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | static O_FIVE: f64 = 0.5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_phi`
[INFO] [stdout]   --> chp3/fib_lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn get_phi() -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_fib`
[INFO] [stdout]   --> chp3/fib_lib.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn nth_fib(nth: i32) -> i64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `maximum`
[INFO] [stdout]   --> chp8/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn maximum<T: Ord + Debug>(xs: &Vec<T>) -> Option<&T> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "3568f1468c5356f23cda1b5f3320ab6b25a085c96b917b36894d83de76caf6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3568f1468c5356f23cda1b5f3320ab6b25a085c96b917b36894d83de76caf6fa", kill_on_drop: false }`
[INFO] [stdout] 3568f1468c5356f23cda1b5f3320ab6b25a085c96b917b36894d83de76caf6fa