[INFO] updating cached repository https://github.com/pepeul1191/rust-tutorial
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] b6a44b11db61c9d3e3eecf17c68275655e18cdde
[INFO] testing pepeul1191/rust-tutorial against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpepeul1191%2Frust-tutorial" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pepeul1191/rust-tutorial on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pepeul1191/rust-tutorial
[INFO] finished tweaking git repo https://github.com/pepeul1191/rust-tutorial
[INFO] tweaked toml for git repo https://github.com/pepeul1191/rust-tutorial written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/pepeul1191/rust-tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a92ddbdd5c5d6310eb0f46db26ea272ce2bef7d46cfbfcd7c7ad1227123f3b9b
[INFO] running `"docker" "start" "-a" "a92ddbdd5c5d6310eb0f46db26ea272ce2bef7d46cfbfcd7c7ad1227123f3b9b"`
[INFO] [stderr]    Compiling mustache v0.8.2
[INFO] [stderr]    Compiling nickel v0.10.1
[INFO] [stderr]    Compiling nickel-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `is_it_true`
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let is_it_true: bool = true;
[INFO] [stderr]    |       ^^^^^^^^^^ help: consider prefixing with an underscore: `_is_it_true`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `let_x`
[INFO] [stderr]   --> src/main.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 |   let let_x: char = 'x';
[INFO] [stderr]    |       ^^^^^ help: consider prefixing with an underscore: `_let_x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:7
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let mut num: i32 = 10;
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `func2`
[INFO] [stderr]  --> src/constants.rs:2:2
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub fn func2() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `goodbye`
[INFO] [stderr]  --> src/english/farewells.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn goodbye() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hello`
[INFO] [stderr]  --> src/japanese/greetings.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn hello() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `goodbye`
[INFO] [stderr]  --> src/japanese/farewells.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn goodbye() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:32:3
[INFO] [stderr]    |
[INFO] [stderr] 32 |   server.listen("127.0.0.1:6767");
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.54s
[INFO] running `"docker" "inspect" "a92ddbdd5c5d6310eb0f46db26ea272ce2bef7d46cfbfcd7c7ad1227123f3b9b"`
[INFO] running `"docker" "rm" "-f" "a92ddbdd5c5d6310eb0f46db26ea272ce2bef7d46cfbfcd7c7ad1227123f3b9b"`
[INFO] [stdout] a92ddbdd5c5d6310eb0f46db26ea272ce2bef7d46cfbfcd7c7ad1227123f3b9b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] d828d236ef51af995fba5c950739de22d70baba97d59cf4c4471566b92fce961
[INFO] running `"docker" "start" "-a" "d828d236ef51af995fba5c950739de22d70baba97d59cf4c4471566b92fce961"`
[INFO] [stderr]    Compiling nickel-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `is_it_true`
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let is_it_true: bool = true;
[INFO] [stderr]    |       ^^^^^^^^^^ help: consider prefixing with an underscore: `_is_it_true`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `let_x`
[INFO] [stderr]   --> src/main.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 |   let let_x: char = 'x';
[INFO] [stderr]    |       ^^^^^ help: consider prefixing with an underscore: `_let_x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:7
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let mut num: i32 = 10;
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `func2`
[INFO] [stderr]  --> src/constants.rs:2:2
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub fn func2() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `goodbye`
[INFO] [stderr]  --> src/english/farewells.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn goodbye() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hello`
[INFO] [stderr]  --> src/japanese/greetings.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn hello() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `goodbye`
[INFO] [stderr]  --> src/japanese/farewells.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn goodbye() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:32:3
[INFO] [stderr]    |
[INFO] [stderr] 32 |   server.listen("127.0.0.1:6767");
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `"docker" "inspect" "d828d236ef51af995fba5c950739de22d70baba97d59cf4c4471566b92fce961"`
[INFO] running `"docker" "rm" "-f" "d828d236ef51af995fba5c950739de22d70baba97d59cf4c4471566b92fce961"`
[INFO] [stdout] d828d236ef51af995fba5c950739de22d70baba97d59cf4c4471566b92fce961
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 23af07479482508eef23f149b6eb3f926fa545c114c9d6d750a6db84fabdc33e
[INFO] running `"docker" "start" "-a" "23af07479482508eef23f149b6eb3f926fa545c114c9d6d750a6db84fabdc33e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nickel_demo-0faa2034c98f6486
[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] running `"docker" "inspect" "23af07479482508eef23f149b6eb3f926fa545c114c9d6d750a6db84fabdc33e"`
[INFO] running `"docker" "rm" "-f" "23af07479482508eef23f149b6eb3f926fa545c114c9d6d750a6db84fabdc33e"`
[INFO] [stdout] 23af07479482508eef23f149b6eb3f926fa545c114c9d6d750a6db84fabdc33e