Dec 12 21:26:12.860 INFO testing wezm/rust-intro-talk against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 12 21:26:12.860 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 21:26:13.225 INFO [stdout] b4a82dbf919b7598913d56c566fd583c60e19d93288bd9ef0e5dee07f1c3cd01
Dec 12 21:26:13.229 INFO running `"docker" "start" "-a" "b4a82dbf919b7598913d56c566fd583c60e19d93288bd9ef0e5dee07f1c3cd01"`
Dec 12 21:26:14.657 INFO [stderr] usermod: no changes
Dec 12 21:26:14.787 INFO [stderr]    Compiling cc v1.0.3
Dec 12 21:26:14.787 INFO [stderr]    Compiling libc v0.2.35
Dec 12 21:26:14.787 INFO [stderr]    Compiling rustc-demangle v0.1.5
Dec 12 21:26:14.809 INFO [stderr]    Compiling pulldown-cmark v0.1.0
Dec 12 21:26:14.809 INFO [stderr]    Compiling serde v1.0.27
Dec 12 21:26:14.809 INFO [stderr]    Compiling serde_derive_internals v0.19.0
Dec 12 21:26:18.005 INFO [stderr]    Compiling rand v0.3.19
Dec 12 21:26:23.739 INFO [stderr]    Compiling serde_derive v1.0.27
Dec 12 21:26:27.138 INFO [stderr]    Compiling backtrace-sys v0.1.16
Dec 12 21:26:28.242 INFO [stderr]    Compiling tempdir v0.3.5
Dec 12 21:26:46.301 INFO [stderr]    Compiling serde_json v1.0.9
Dec 12 21:26:46.301 INFO [stderr]    Compiling semver v0.8.0
Dec 12 21:26:49.179 INFO [stderr]    Compiling backtrace v0.3.5
Dec 12 21:26:51.391 INFO [stderr]    Compiling error-chain v0.11.0
Dec 12 21:26:55.055 INFO [stderr]    Compiling cargo_metadata v0.3.3
Dec 12 21:26:58.188 INFO [stderr]    Compiling skeptic v0.13.2
Dec 12 21:27:01.518 INFO [stderr]    Compiling demo v0.1.0 (/source)
Dec 12 21:27:04.029 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.35s
Dec 12 21:27:04.036 INFO [stderr] su: No module specific data is present
Dec 12 21:27:05.187 INFO running `"docker" "inspect" "b4a82dbf919b7598913d56c566fd583c60e19d93288bd9ef0e5dee07f1c3cd01"`
Dec 12 21:27:05.501 INFO running `"docker" "rm" "-f" "b4a82dbf919b7598913d56c566fd583c60e19d93288bd9ef0e5dee07f1c3cd01"`
Dec 12 21:27:05.835 INFO [stdout] b4a82dbf919b7598913d56c566fd583c60e19d93288bd9ef0e5dee07f1c3cd01
Dec 12 21:27:05.843 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 21:27:06.321 INFO [stdout] 19b2df85943f75acb7d7f6364faf521f0d8ed69ab34230a31b1a8fccb963950b
Dec 12 21:27:06.324 INFO running `"docker" "start" "-a" "19b2df85943f75acb7d7f6364faf521f0d8ed69ab34230a31b1a8fccb963950b"`
Dec 12 21:27:07.831 INFO [stderr] usermod: no changes
Dec 12 21:27:08.031 INFO [stderr]    Compiling demo v0.1.0 (/source)
Dec 12 21:27:10.236 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
Dec 12 21:27:10.243 INFO [stderr] su: No module specific data is present
Dec 12 21:27:11.723 INFO running `"docker" "inspect" "19b2df85943f75acb7d7f6364faf521f0d8ed69ab34230a31b1a8fccb963950b"`
Dec 12 21:27:12.005 INFO running `"docker" "rm" "-f" "19b2df85943f75acb7d7f6364faf521f0d8ed69ab34230a31b1a8fccb963950b"`
Dec 12 21:27:12.355 INFO [stdout] 19b2df85943f75acb7d7f6364faf521f0d8ed69ab34230a31b1a8fccb963950b
Dec 12 21:27:12.361 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 21:27:12.975 INFO [stdout] ae6d16f13a78cbfebcf017855dc99272cc8456ba794016241c16af74c9ecd9d5
Dec 12 21:27:12.977 INFO running `"docker" "start" "-a" "ae6d16f13a78cbfebcf017855dc99272cc8456ba794016241c16af74c9ecd9d5"`
Dec 12 21:27:14.790 INFO [stderr] usermod: no changes
Dec 12 21:27:14.983 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
Dec 12 21:27:14.991 INFO [stderr]      Running /target/debug/deps/demo-9827a2e35922ed85
Dec 12 21:27:14.992 INFO [stdout] 
Dec 12 21:27:14.992 INFO [stdout] running 5 tests
Dec 12 21:27:15.011 INFO [stdout] test test_file_type_missing ... ok
Dec 12 21:27:15.011 INFO [stdout] test test_file_type_html ... ok
Dec 12 21:27:15.011 INFO [stdout] test test_file_type_unknown ... ok
Dec 12 21:27:15.011 INFO [stdout] test test_file_type_rust ... ok
Dec 12 21:27:15.012 INFO [stdout] test test_file_type_toml ... ok
Dec 12 21:27:15.012 INFO [stdout] 
Dec 12 21:27:15.012 INFO [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 21:27:15.012 INFO [stdout] 
Dec 12 21:27:15.013 INFO [stderr]      Running /target/debug/deps/slides-016de1d353f77c88
Dec 12 21:27:15.016 INFO [stdout] 
Dec 12 21:27:15.016 INFO [stdout] running 11 tests
Dec 12 21:27:55.615 INFO [stderr] warning: enum is never used: `SerialProtocol`
Dec 12 21:27:55.615 INFO [stderr]  --> /tmp/rust-skeptic.kEfJei09aRVp/test.rs:2:1
Dec 12 21:27:55.615 INFO [stderr]   |
Dec 12 21:27:55.615 INFO [stderr] 2 | enum SerialProtocol {
Dec 12 21:27:55.615 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 12 21:27:55.615 INFO [stderr]   |
Dec 12 21:27:55.615 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 21:27:55.615 INFO [stderr] 
Dec 12 21:27:55.695 INFO [stdout] test slides_in_sect_enums_line_324 ... ok
Dec 12 21:27:55.783 INFO [stderr] warning: unused variable: `i`
Dec 12 21:27:55.783 INFO [stderr]  --> /tmp/rust-skeptic.4m9nReKqYHZv/test.rs:5:5
Dec 12 21:27:55.783 INFO [stderr]   |
Dec 12 21:27:55.783 INFO [stderr] 5 | for i in numbers.iter() {
Dec 12 21:27:55.783 INFO [stderr]   |     ^ help: consider using `_i` instead
Dec 12 21:27:55.783 INFO [stderr]   |
Dec 12 21:27:55.783 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 21:27:55.783 INFO [stderr] 
Dec 12 21:27:55.783 INFO [stderr] warning: unused variable: `i`
Dec 12 21:27:55.783 INFO [stderr]  --> /tmp/rust-skeptic.4m9nReKqYHZv/test.rs:9:5
Dec 12 21:27:55.783 INFO [stderr]   |
Dec 12 21:27:55.783 INFO [stderr] 9 | for i in 0..10 {
Dec 12 21:27:55.783 INFO [stderr]   |     ^ help: consider using `_i` instead
Dec 12 21:27:55.783 INFO [stderr] 
Dec 12 21:27:55.796 INFO [stdout] Rust Introduction
Dec 12 21:27:55.796 INFO [stdout] test slides_in_sect_introduction_line_25 ... ok
Dec 12 21:27:55.823 INFO [stdout] test slides_in_sect_loops_line_268 ... ok
Dec 12 21:27:55.847 INFO [stdout] Wesley is happy
Dec 12 21:27:55.851 INFO [stdout] test slides_in_sect_conditionals_if_line_231 ... ok
Dec 12 21:27:55.855 INFO [stderr] warning: unused variable: `sum`
Dec 12 21:27:55.855 INFO [stderr]  --> /tmp/rust-skeptic.NdyRR8p0WZP9/test.rs:7:9
Dec 12 21:27:55.855 INFO [stderr]   |
Dec 12 21:27:55.855 INFO [stderr] 7 |     let sum = add(2, 3);
Dec 12 21:27:55.855 INFO [stderr]   |         ^^^ help: consider using `_sum` instead
Dec 12 21:27:55.855 INFO [stderr]   |
Dec 12 21:27:55.855 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 21:27:55.856 INFO [stderr] 
Dec 12 21:27:55.891 INFO [stdout] test slides_in_sect_functions_line_217 ... ok
Dec 12 21:27:56.039 INFO [stdout] test slides_in_sect_functional_or_imperative_line_304 ... ok
Dec 12 21:27:56.086 INFO [stdout] test slides_in_sect_functional_or_imperative_line_286 ... ok
Dec 12 21:27:56.113 INFO [stdout] test slides_in_sect_conditionals_match_line_248 ... ok
Dec 12 21:28:09.435 INFO [stderr] warning: enum is never used: `Option`
Dec 12 21:28:09.435 INFO [stdout] test slides_in_sect_option_line_362 ... ok
Dec 12 21:28:09.435 INFO [stderr]  --> /tmp/rust-skeptic.KqlbaVAZ1o2t/test.rs:2:1
Dec 12 21:28:09.435 INFO [stderr]   |
Dec 12 21:28:09.435 INFO [stderr] 2 | enum Option<T> {
Dec 12 21:28:09.435 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 12 21:28:09.435 INFO [stderr]   |
Dec 12 21:28:09.435 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 21:28:09.435 INFO [stderr] 
Dec 12 21:28:09.529 INFO [stderr] warning: enum is never used: `SerialProtocol`
Dec 12 21:28:09.529 INFO [stderr]  --> /tmp/rust-skeptic.t9FiApAVhdKy/test.rs:2:1
Dec 12 21:28:09.529 INFO [stderr]   |
Dec 12 21:28:09.529 INFO [stderr] 2 | enum SerialProtocol {
Dec 12 21:28:09.529 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 12 21:28:09.529 INFO [stderr]   |
Dec 12 21:28:09.529 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 21:28:09.529 INFO [stderr] 
Dec 12 21:28:09.529 INFO [stderr] warning: struct is never constructed: `Person`
Dec 12 21:28:09.529 INFO [stderr]   --> /tmp/rust-skeptic.t9FiApAVhdKy/test.rs:10:1
Dec 12 21:28:09.529 INFO [stderr]    |
Dec 12 21:28:09.529 INFO [stderr] 10 | struct Person {
Dec 12 21:28:09.529 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 12 21:28:09.529 INFO [stderr] 
Dec 12 21:28:09.529 INFO [stderr] warning: method is never used: `name_and_age`
Dec 12 21:28:09.529 INFO [stderr]   --> /tmp/rust-skeptic.t9FiApAVhdKy/test.rs:17:5
Dec 12 21:28:09.529 INFO [stderr]    |
Dec 12 21:28:09.529 INFO [stderr] 17 |     fn name_and_age(&self) -> String {
Dec 12 21:28:09.529 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 21:28:09.529 INFO [stderr] 
Dec 12 21:28:09.538 INFO [stdout] test slides_in_sect_structs_line_340 ... ok
Dec 12 21:28:09.555 INFO [stderr] warning: enum is never used: `Result`
Dec 12 21:28:09.555 INFO [stderr]  --> /tmp/rust-skeptic.FcznXNfawvkO/test.rs:2:1
Dec 12 21:28:09.555 INFO [stderr]   |
Dec 12 21:28:09.555 INFO [stderr] 2 | enum Result<T, E> {
Dec 12 21:28:09.555 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 12 21:28:09.555 INFO [stderr]   |
Dec 12 21:28:09.555 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 21:28:09.555 INFO [stderr] 
Dec 12 21:28:09.561 INFO [stdout] test slides_in_sect_result_line_377 ... ok
Dec 12 21:28:09.561 INFO [stdout] 
Dec 12 21:28:09.561 INFO [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 21:28:09.561 INFO [stdout] 
Dec 12 21:28:09.563 INFO [stderr] su: No module specific data is present
Dec 12 21:28:10.675 INFO running `"docker" "inspect" "ae6d16f13a78cbfebcf017855dc99272cc8456ba794016241c16af74c9ecd9d5"`
Dec 12 21:28:10.948 INFO running `"docker" "rm" "-f" "ae6d16f13a78cbfebcf017855dc99272cc8456ba794016241c16af74c9ecd9d5"`
Dec 12 21:28:11.287 INFO [stdout] ae6d16f13a78cbfebcf017855dc99272cc8456ba794016241c16af74c9ecd9d5