[INFO] updating cached repository https://github.com/elycruz/rust-book
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06bf9dee4b41112938f12b0e1f85ba803c4f563f
[INFO] testing elycruz/rust-book against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felycruz%2Frust-book" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elycruz/rust-book on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/elycruz/rust-book already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 27a58f3daa958fd661c7cdd28b4148c4c653b447ddd40ac53beaa3466dfb1b8c
[INFO] running `"docker" "start" "-a" "27a58f3daa958fd661c7cdd28b4148c4c653b447ddd40ac53beaa3466dfb1b8c"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.11
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling rust-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `mean`
[INFO] [stderr]  --> chp8/mean_and_mode.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn mean(v: &Vec<f64>) -> f64 {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mode`
[INFO] [stderr]   --> chp8/mean_and_mode.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn mode(vs: &Vec<f64>) -> f64 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `FIVE_O`
[INFO] [stderr]  --> chp3/fib_lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | static FIVE_O: f64 = 5.0;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `O_FIVE`
[INFO] [stderr]  --> chp3/fib_lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | static O_FIVE: f64 = 0.5;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_phi`
[INFO] [stderr]   --> chp3/fib_lib.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn get_phi() -> f64 {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nth_fib`
[INFO] [stderr]   --> chp3/fib_lib.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn nth_fib(nth: i32) -> i64 {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `maximum`
[INFO] [stderr]   --> chp8/main.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn maximum<T: Ord + Debug>(xs: &Vec<T>) -> Option<&T> {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.29s
[INFO] running `"docker" "inspect" "27a58f3daa958fd661c7cdd28b4148c4c653b447ddd40ac53beaa3466dfb1b8c"`
[INFO] running `"docker" "rm" "-f" "27a58f3daa958fd661c7cdd28b4148c4c653b447ddd40ac53beaa3466dfb1b8c"`
[INFO] [stdout] 27a58f3daa958fd661c7cdd28b4148c4c653b447ddd40ac53beaa3466dfb1b8c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2cd9eb7d1da869f76c1c9663269a82a8aae86cf8365da9d2b6511f1d0ae88657
[INFO] running `"docker" "start" "-a" "2cd9eb7d1da869f76c1c9663269a82a8aae86cf8365da9d2b6511f1d0ae88657"`
[INFO] [stderr]    Compiling rust-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]    --> chp8/company_directory.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use std::collections::HashMap;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.10s
[INFO] running `"docker" "inspect" "2cd9eb7d1da869f76c1c9663269a82a8aae86cf8365da9d2b6511f1d0ae88657"`
[INFO] running `"docker" "rm" "-f" "2cd9eb7d1da869f76c1c9663269a82a8aae86cf8365da9d2b6511f1d0ae88657"`
[INFO] [stdout] 2cd9eb7d1da869f76c1c9663269a82a8aae86cf8365da9d2b6511f1d0ae88657
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 525172a62aa7042856f154fdd3966bf916a52bad52309275d431f95044369544
[INFO] running `"docker" "start" "-a" "525172a62aa7042856f154fdd3966bf916a52bad52309275d431f95044369544"`
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]    --> chp8/company_directory.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use std::collections::HashMap;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp1-95a4c886ff954892
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp12_minigrep-9aaccf682faae87a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test minigrep::tests::test_case_insensitive ... ok
[INFO] [stdout] test minigrep::tests::test_one_result ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp2_guessing_game-e2512aedd88dbb45
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test guessing_game_lib::tests::test_head_after_trimmed_and_to_lower ... ok
[INFO] [stdout] test guessing_game_lib::tests::test_starts_with_yes_no_char ... ok
[INFO] [stdout] test guessing_game_lib::tests::test_yes_no_to_bool ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp3_convert_temps-5db1db65cc589d16
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_to_celsius ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp3_fib-eb9c0105fee59974
[INFO] [stdout] test tests::test_to_farenheit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test fib_lib::test::test_fib_i64 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp3_nth_fib-24b4f32b5b32e4d2
[INFO] [stdout] test fib_lib::test::test_nth_fib ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test fib_lib::test::test_fib_i64 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp3_twelve_days-523b4e3ebf545745
[INFO] [stdout] test fib_lib::test::test_nth_fib ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp8-a4dec811cd51cf83
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_maximum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp8_company_directory-7c5440688d85f235
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_add_dept_emp ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp8_mean_mode-110a4c9d460ff235
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_mean ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chp8_piglatin-7a0ca54684775fc2
[INFO] [stdout] test test::test_mode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::test_word_to_piglatin ... ok
[INFO] [stdout] test test::test_to_piglatin ... ok
[INFO] [stdout] test test::test_line_to_piglatin ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "525172a62aa7042856f154fdd3966bf916a52bad52309275d431f95044369544"`
[INFO] running `"docker" "rm" "-f" "525172a62aa7042856f154fdd3966bf916a52bad52309275d431f95044369544"`
[INFO] [stdout] 525172a62aa7042856f154fdd3966bf916a52bad52309275d431f95044369544