[INFO] cloning repository https://github.com/wezm/rust-intro-talk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wezm/rust-intro-talk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 978872c31d714aa413ee86a7c6b5ccdbc8966caa
[INFO] testing wezm/rust-intro-talk against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wezm/rust-intro-talk on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wezm/rust-intro-talk
[INFO] finished tweaking git repo https://github.com/wezm/rust-intro-talk
[INFO] tweaked toml for git repo https://github.com/wezm/rust-intro-talk written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/wezm/rust-intro-talk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07cd69484ff3ae26723a9184d475a12b7e01e21762ef42888679f576218ce69b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "07cd69484ff3ae26723a9184d475a12b7e01e21762ef42888679f576218ce69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07cd69484ff3ae26723a9184d475a12b7e01e21762ef42888679f576218ce69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07cd69484ff3ae26723a9184d475a12b7e01e21762ef42888679f576218ce69b", kill_on_drop: false }`
[INFO] [stdout] 07cd69484ff3ae26723a9184d475a12b7e01e21762ef42888679f576218ce69b
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fa13f4bb0ec69a27d6a898bb19e01688345c41d10c30b9f3682d6a4016e5f5b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7fa13f4bb0ec69a27d6a898bb19e01688345c41d10c30b9f3682d6a4016e5f5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling libc v0.2.35
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling rand v0.3.19
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling cargo_metadata v0.3.3
[INFO] [stderr]    Compiling skeptic v0.13.2
[INFO] [stderr]    Compiling demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.72s
[INFO] running `Command { std: "docker" "inspect" "7fa13f4bb0ec69a27d6a898bb19e01688345c41d10c30b9f3682d6a4016e5f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa13f4bb0ec69a27d6a898bb19e01688345c41d10c30b9f3682d6a4016e5f5b", kill_on_drop: false }`
[INFO] [stdout] 7fa13f4bb0ec69a27d6a898bb19e01688345c41d10c30b9f3682d6a4016e5f5b
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d038fbf17b4c49646a8a178a95666f5f4db0f4b2f583be22dca277f28e4221d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d038fbf17b4c49646a8a178a95666f5f4db0f4b2f583be22dca277f28e4221d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/demo-3e939c4e04f5879f)
[INFO] [stderr]   Executable tests/slides.rs (/opt/rustwide/target/debug/deps/slides-6b2d29fe52d17d47)
[INFO] running `Command { std: "docker" "inspect" "d038fbf17b4c49646a8a178a95666f5f4db0f4b2f583be22dca277f28e4221d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d038fbf17b4c49646a8a178a95666f5f4db0f4b2f583be22dca277f28e4221d6", kill_on_drop: false }`
[INFO] [stdout] d038fbf17b4c49646a8a178a95666f5f4db0f4b2f583be22dca277f28e4221d6
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 847edd8849cc7a8b823ee09b4d7e3800238d5bce1214c8e0e2398a8b022e9c26
[INFO] running `Command { std: "docker" "start" "-a" "847edd8849cc7a8b823ee09b4d7e3800238d5bce1214c8e0e2398a8b022e9c26", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/demo-3e939c4e04f5879f)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_file_type_rust ... ok
[INFO] [stdout] test test_file_type_html ... ok
[INFO] [stdout] test test_file_type_toml ... ok
[INFO] [stdout] test test_file_type_missing ... ok
[INFO] [stdout] test test_file_type_unknown ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slides.rs (/opt/rustwide/target/debug/deps/slides-6b2d29fe52d17d47)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test slides_in_sect_conditionals_if_line_231 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_conditionals_match_line_248 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_enums_line_324 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_functional_or_imperative_line_286 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_functional_or_imperative_line_304 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_functions_line_217 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_introduction_line_25 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_loops_line_268 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_option_line_362 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_result_line_377 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_structs_line_340 has been running for over 60 seconds
[INFO] [stdout] test slides_in_sect_conditionals_match_line_248 ... ok
[INFO] [stdout] Wesley is happy
[INFO] [stdout] test slides_in_sect_conditionals_if_line_231 ... ok
[INFO] [stdout] test slides_in_sect_functional_or_imperative_line_286 ... ok
[INFO] [stdout] test slides_in_sect_functional_or_imperative_line_304 ... ok
[INFO] [stdout] Rust Introduction
[INFO] [stdout] test slides_in_sect_introduction_line_25 ... ok
[INFO] [stderr] warning: enum is never used: `SerialProtocol`
[INFO] [stderr]  --> /tmp/rust-skeptic.2miBkLteR2P9/test.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum SerialProtocol {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]   --> /tmp/rust-skeptic.2miBkLteR2P9/test.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Person {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `name_and_age`
[INFO] [stderr]   --> /tmp/rust-skeptic.2miBkLteR2P9/test.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn name_and_age(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_structs_line_340 ... ok
[INFO] [stderr] warning: enum is never used: `Option`
[INFO] [stderr]  --> /tmp/rust-skeptic.6mhl3jsGRo1L/test.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum Option<T> {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_option_line_362 ... ok
[INFO] [stderr] warning: enum is never used: `SerialProtocol`
[INFO] [stderr]  --> /tmp/rust-skeptic.1YbWr7yb46wR/test.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum SerialProtocol {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_enums_line_324 ... ok
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> /tmp/rust-skeptic.sfomsdFddxON/test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | for i in numbers.iter() {
[INFO] [stderr]   |     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> /tmp/rust-skeptic.sfomsdFddxON/test.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | for i in 0..10 {
[INFO] [stderr]   |     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_loops_line_268 ... ok
[INFO] [stderr] warning: enum is never used: `Result`
[INFO] [stderr]  --> /tmp/rust-skeptic.8dYEN6tgq1Dt/test.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum Result<T, E> {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_result_line_377 ... ok
[INFO] [stderr] warning: unused variable: `sum`
[INFO] [stderr]  --> /tmp/rust-skeptic.mrYHl32lY9bY/test.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let sum = add(2, 3);
[INFO] [stderr]   |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] test slides_in_sect_functions_line_217 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 267.96s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "847edd8849cc7a8b823ee09b4d7e3800238d5bce1214c8e0e2398a8b022e9c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "847edd8849cc7a8b823ee09b4d7e3800238d5bce1214c8e0e2398a8b022e9c26", kill_on_drop: false }`
[INFO] [stdout] 847edd8849cc7a8b823ee09b4d7e3800238d5bce1214c8e0e2398a8b022e9c26