[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 master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk" "/workspace/builds/worker-110/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-110/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wezm/rust-intro-talk on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-110/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcfab445c8a33061a04f345314c07db179bf6bc66328b5737a8592c51d81ec6a
[INFO] running `Command { std: "docker" "start" "-a" "fcfab445c8a33061a04f345314c07db179bf6bc66328b5737a8592c51d81ec6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcfab445c8a33061a04f345314c07db179bf6bc66328b5737a8592c51d81ec6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcfab445c8a33061a04f345314c07db179bf6bc66328b5737a8592c51d81ec6a", kill_on_drop: false }`
[INFO] [stdout] fcfab445c8a33061a04f345314c07db179bf6bc66328b5737a8592c51d81ec6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdb96f1ac12a82ddf225f263d98606b9ed452b9f6a85072fb7dbf6be3d237a80
[INFO] running `Command { std: "docker" "start" "-a" "cdb96f1ac12a82ddf225f263d98606b9ed452b9f6a85072fb7dbf6be3d237a80", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling libc v0.2.35
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling rand v0.3.19
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.9
[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 25.14s
[INFO] running `Command { std: "docker" "inspect" "cdb96f1ac12a82ddf225f263d98606b9ed452b9f6a85072fb7dbf6be3d237a80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb96f1ac12a82ddf225f263d98606b9ed452b9f6a85072fb7dbf6be3d237a80", kill_on_drop: false }`
[INFO] [stdout] cdb96f1ac12a82ddf225f263d98606b9ed452b9f6a85072fb7dbf6be3d237a80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ec289ef51629f95c2b2b893663c887c50188adb67f02b35473845826360f4d9
[INFO] running `Command { std: "docker" "start" "-a" "0ec289ef51629f95c2b2b893663c887c50188adb67f02b35473845826360f4d9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.68s
[INFO] running `Command { std: "docker" "inspect" "0ec289ef51629f95c2b2b893663c887c50188adb67f02b35473845826360f4d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec289ef51629f95c2b2b893663c887c50188adb67f02b35473845826360f4d9", kill_on_drop: false }`
[INFO] [stdout] 0ec289ef51629f95c2b2b893663c887c50188adb67f02b35473845826360f4d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 76322768e48fc605b4e5be4ed4dc65fc146f674ca4eda2f7948fa508ea2267cd
[INFO] running `Command { std: "docker" "start" "-a" "76322768e48fc605b4e5be4ed4dc65fc146f674ca4eda2f7948fa508ea2267cd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demo-acc93517a7a706f1)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_file_type_html ... ok
[INFO] [stdout] test test_file_type_missing ... ok
[INFO] [stdout] test test_file_type_rust ... ok
[INFO] [stdout] test test_file_type_toml ... 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 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slides.rs (/opt/rustwide/target/debug/deps/slides-d6e9e19c948a2501)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stderr] warning: enum is never used: `Result`
[INFO] [stderr]  --> /tmp/rust-skeptic.JYHiKCjcJMIT/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] [stdout] test slides_in_sect_functional_or_imperative_line_304 ... ok
[INFO] [stderr] warning: enum is never used: `Option`
[INFO] [stderr]  --> /tmp/rust-skeptic.6iMGhPCApWEY/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: unused variable: `sum`
[INFO] [stderr]  --> /tmp/rust-skeptic.HByKdt0GQKsz/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] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> /tmp/rust-skeptic.yogO16RIa5wF/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.yogO16RIa5wF/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_functional_or_imperative_line_286 ... ok
[INFO] [stderr] warning: enum is never used: `SerialProtocol`
[INFO] [stdout] test slides_in_sect_loops_line_268 ... ok
[INFO] [stderr]  --> /tmp/rust-skeptic.ZFa1m5hr7eDc/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: enum is never used: `SerialProtocol`
[INFO] [stderr]  --> /tmp/rust-skeptic.dFju9ctRAEXL/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.dFju9ctRAEXL/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.dFju9ctRAEXL/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] [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] Rust Introduction
[INFO] [stdout] test slides_in_sect_introduction_line_25 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 38.17s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76322768e48fc605b4e5be4ed4dc65fc146f674ca4eda2f7948fa508ea2267cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76322768e48fc605b4e5be4ed4dc65fc146f674ca4eda2f7948fa508ea2267cd", kill_on_drop: false }`
[INFO] [stdout] 76322768e48fc605b4e5be4ed4dc65fc146f674ca4eda2f7948fa508ea2267cd