[INFO] cloning repository https://github.com/sdobz/rust-follow-along
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdobz/rust-follow-along" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdobz%2Frust-follow-along", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdobz%2Frust-follow-along'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15471338aa916f44df49638cd48fa6ff21536e5e
[INFO] testing sdobz/rust-follow-along against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdobz%2Frust-follow-along" "/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/sdobz/rust-follow-along on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdobz/rust-follow-along
[INFO] finished tweaking git repo https://github.com/sdobz/rust-follow-along
[INFO] tweaked toml for git repo https://github.com/sdobz/rust-follow-along written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sdobz/rust-follow-along already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b41a4877428c57e7145aa0fd588ec6510e0f03cd37b72e37b09ffd6bf3ed412
[INFO] running `Command { std: "docker" "start" "-a" "5b41a4877428c57e7145aa0fd588ec6510e0f03cd37b72e37b09ffd6bf3ed412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b41a4877428c57e7145aa0fd588ec6510e0f03cd37b72e37b09ffd6bf3ed412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b41a4877428c57e7145aa0fd588ec6510e0f03cd37b72e37b09ffd6bf3ed412", kill_on_drop: false }`
[INFO] [stdout] 5b41a4877428c57e7145aa0fd588ec6510e0f03cd37b72e37b09ffd6bf3ed412
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 243d9c14bd517dd9a011682c4edfec5d484a5542a82dbf9fecfba9c03977f10e
[INFO] running `Command { std: "docker" "start" "-a" "243d9c14bd517dd9a011682c4edfec5d484a5542a82dbf9fecfba9c03977f10e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling ch13b_minigrep2 v0.1.0 (/opt/rustwide/workdir/ch13b_minigrep2)
[INFO] [stderr]    Compiling ch17_objectoriented v0.1.0 (/opt/rustwide/workdir/ch17_objectoriented)
[INFO] [stderr]    Compiling ch20_webserver v0.1.0 (/opt/rustwide/workdir/ch20_webserver)
[INFO] [stderr]    Compiling ch07_modules v0.1.0 (/opt/rustwide/workdir/ch07_modules)
[INFO] [stderr]    Compiling ch12_minigrep v0.1.0 (/opt/rustwide/workdir/ch12_minigrep)
[INFO] [stderr]    Compiling ch03b_functions v0.1.0 (/opt/rustwide/workdir/ch03b_functions)
[INFO] [stderr]    Compiling ch03c_branches v0.1.0 (/opt/rustwide/workdir/ch03c_branches)
[INFO] [stderr]    Compiling ch13a_functional v0.1.0 (/opt/rustwide/workdir/ch13a_functional)
[INFO] [stderr]    Compiling ch05_structs v0.1.0 (/opt/rustwide/workdir/ch05_structs)
[INFO] [stderr]    Compiling ch11_tests v0.1.0 (/opt/rustwide/workdir/ch11_tests)
[INFO] [stderr]    Compiling ch03a_variables v0.1.0 (/opt/rustwide/workdir/ch03a_variables)
[INFO] [stderr]    Compiling ch01_getting_started v0.1.0 (/opt/rustwide/workdir/ch01_getting_started)
[INFO] [stderr]    Compiling ch10_generics v0.1.0 (/opt/rustwide/workdir/ch10_generics)
[INFO] [stderr]    Compiling ch18_patterns v0.1.0 (/opt/rustwide/workdir/ch18_patterns)
[INFO] [stderr]    Compiling ch08_collections v0.1.0 (/opt/rustwide/workdir/ch08_collections)
[INFO] [stderr]    Compiling ch15_smartpointers v0.1.0 (/opt/rustwide/workdir/ch15_smartpointers)
[INFO] [stderr]    Compiling ch16_concurrency v0.1.0 (/opt/rustwide/workdir/ch16_concurrency)
[INFO] [stderr]    Compiling ch04b_slices v0.1.0 (/opt/rustwide/workdir/ch04b_slices)
[INFO] [stderr]    Compiling ch09_errors v0.1.0 (/opt/rustwide/workdir/ch09_errors)
[INFO] [stderr]    Compiling ch19_advacedfeatures v0.1.0 (/opt/rustwide/workdir/ch19_advancedfeatures)
[INFO] [stderr]    Compiling ch06_enums v0.1.0 (/opt/rustwide/workdir/ch06_enums)
[INFO] [stderr]    Compiling ch04a_ownership v0.1.0 (/opt/rustwide/workdir/ch04a_ownership)
[INFO] [stdout] warning: constant is never used: `MAX_POINTS`
[INFO] [stdout]  --> ch03a_variables/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAX_POINTS: u128 = 200_000;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         'a' ... 'j' => println!("Early ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         'k' ... 'z' => println!("Late ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:221:50
[INFO] [stdout]     |
[INFO] [stdout] 221 |         HelloMessage::Hello { id: id_variable @ 3...7 } => {
[INFO] [stdout]     |                                                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:225:37
[INFO] [stdout]     |
[INFO] [stdout] 225 |         HelloMessage::Hello { id: 10...12 } => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> ch13a_functional/src/iterators.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `setting_value` is never read
[INFO] [stdout]    --> ch18_patterns/src/main.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |             setting_value = new_setting_value;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> ch11_tests/src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     value: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Context`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Context<'s>(&'s str);
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Parser<'c, 's: 'c> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn parse(&self) -> Result<(), &'s str> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LimitTracker`
[INFO] [stdout]  --> ch15_smartpointers/src/refcell.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct LimitTracker<'a, T: 'a + Messenger> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> ch15_smartpointers/src/refcell.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_value`
[INFO] [stdout]   --> ch15_smartpointers/src/refcell.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn set_value(&mut self, value: usize) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_context`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn parse_context(context: Context) -> Result<(), &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `diameter`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     diameter: &'a i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StrWrap`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct StrWrap<'a>(&'a str);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn foo<'a>(string: &'a str) -> StrWrap<'a> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo_anon_lifetime`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn foo_anon_lifetime(string: &str) -> StrWrap<'_> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:257:5
[INFO] [stdout]     |
[INFO] [stdout] 257 |     y: i32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 258 |     z: i32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     Write(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgb`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:269:5
[INFO] [stdout]     |
[INFO] [stdout] 269 |     Rgb(i32, i32, i32),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alaska`
[INFO] [stdout]   --> ch06_enums/src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]   --> ch06_enums/src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]   --> ch06_enums/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]   --> ch06_enums/src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> ch17_objectoriented/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> ch17_objectoriented/src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     height: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling ch14b_add_one v0.1.0 (/opt/rustwide/workdir/ch14b_add_one)
[INFO] [stderr]    Compiling ch14a_adder v0.1.0 (/opt/rustwide/workdir/ch14a_adder)
[INFO] [stderr]    Compiling ch02_guessing_game v0.1.0 (/opt/rustwide/workdir/ch02_guessing_game)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.04s
[INFO] running `Command { std: "docker" "inspect" "243d9c14bd517dd9a011682c4edfec5d484a5542a82dbf9fecfba9c03977f10e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "243d9c14bd517dd9a011682c4edfec5d484a5542a82dbf9fecfba9c03977f10e", kill_on_drop: false }`
[INFO] [stdout] 243d9c14bd517dd9a011682c4edfec5d484a5542a82dbf9fecfba9c03977f10e
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96d98d5ce470a8a49afdbf31ce8f8380108f6e8abeca7084b9761e82758cfbc1
[INFO] running `Command { std: "docker" "start" "-a" "96d98d5ce470a8a49afdbf31ce8f8380108f6e8abeca7084b9761e82758cfbc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling ch03a_variables v0.1.0 (/opt/rustwide/workdir/ch03a_variables)
[INFO] [stderr]    Compiling ch06_enums v0.1.0 (/opt/rustwide/workdir/ch06_enums)
[INFO] [stderr]    Compiling ch07_modules v0.1.0 (/opt/rustwide/workdir/ch07_modules)
[INFO] [stderr]    Compiling ch20_webserver v0.1.0 (/opt/rustwide/workdir/ch20_webserver)
[INFO] [stderr]    Compiling ch08_collections v0.1.0 (/opt/rustwide/workdir/ch08_collections)
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> ch11_tests/src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     value: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ch15_smartpointers v0.1.0 (/opt/rustwide/workdir/ch15_smartpointers)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ch19_advacedfeatures v0.1.0 (/opt/rustwide/workdir/ch19_advancedfeatures)
[INFO] [stderr]    Compiling ch16_concurrency v0.1.0 (/opt/rustwide/workdir/ch16_concurrency)
[INFO] [stderr]    Compiling ch10_generics v0.1.0 (/opt/rustwide/workdir/ch10_generics)
[INFO] [stderr]    Compiling ch13b_minigrep2 v0.1.0 (/opt/rustwide/workdir/ch13b_minigrep2)
[INFO] [stderr]    Compiling ch05_structs v0.1.0 (/opt/rustwide/workdir/ch05_structs)
[INFO] [stderr]    Compiling ch04a_ownership v0.1.0 (/opt/rustwide/workdir/ch04a_ownership)
[INFO] [stderr]    Compiling ch18_patterns v0.1.0 (/opt/rustwide/workdir/ch18_patterns)
[INFO] [stderr]    Compiling ch12_minigrep v0.1.0 (/opt/rustwide/workdir/ch12_minigrep)
[INFO] [stderr]    Compiling ch13a_functional v0.1.0 (/opt/rustwide/workdir/ch13a_functional)
[INFO] [stderr]    Compiling ch03b_functions v0.1.0 (/opt/rustwide/workdir/ch03b_functions)
[INFO] [stderr]    Compiling ch17_objectoriented v0.1.0 (/opt/rustwide/workdir/ch17_objectoriented)
[INFO] [stderr]    Compiling ch03c_branches v0.1.0 (/opt/rustwide/workdir/ch03c_branches)
[INFO] [stderr]    Compiling ch04b_slices v0.1.0 (/opt/rustwide/workdir/ch04b_slices)
[INFO] [stderr]    Compiling ch11_tests v0.1.0 (/opt/rustwide/workdir/ch11_tests)
[INFO] [stderr]    Compiling ch09_errors v0.1.0 (/opt/rustwide/workdir/ch09_errors)
[INFO] [stderr]    Compiling ch01_getting_started v0.1.0 (/opt/rustwide/workdir/ch01_getting_started)
[INFO] [stderr]    Compiling ch14b_add_one v0.1.0 (/opt/rustwide/workdir/ch14b_add_one)
[INFO] [stderr]    Compiling ch02_guessing_game v0.1.0 (/opt/rustwide/workdir/ch02_guessing_game)
[INFO] [stderr]    Compiling ch14a_adder v0.1.0 (/opt/rustwide/workdir/ch14a_adder)
[INFO] [stdout] warning: constant is never used: `MAX_POINTS`
[INFO] [stdout]  --> ch03a_variables/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAX_POINTS: u128 = 200_000;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> ch11_tests/src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     value: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         'a' ... 'j' => println!("Early ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> ch18_patterns/src/main.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |         'k' ... 'z' => println!("Late ASCII letter"),
[INFO] [stdout]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:221:50
[INFO] [stdout]     |
[INFO] [stdout] 221 |         HelloMessage::Hello { id: id_variable @ 3...7 } => {
[INFO] [stdout]     |                                                  ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> ch18_patterns/src/main.rs:225:37
[INFO] [stdout]     |
[INFO] [stdout] 225 |         HelloMessage::Hello { id: 10...12 } => {
[INFO] [stdout]     |                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> ch17_objectoriented/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> ch17_objectoriented/src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     height: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Alaska`
[INFO] [stdout]   --> ch06_enums/src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Penny`
[INFO] [stdout]   --> ch06_enums/src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]   --> ch06_enums/src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]   --> ch06_enums/src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Context`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Context<'s>(&'s str);
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Parser<'c, 's: 'c> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]  --> ch19_advancedfeatures/src/lifetimes.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn parse(&self) -> Result<(), &'s str> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_context`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn parse_context(context: Context) -> Result<(), &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `diameter`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     diameter: &'a i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StrWrap`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct StrWrap<'a>(&'a str);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn foo<'a>(string: &'a str) -> StrWrap<'a> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo_anon_lifetime`
[INFO] [stdout]   --> ch19_advancedfeatures/src/lifetimes.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn foo_anon_lifetime(string: &str) -> StrWrap<'_> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `setting_value` is never read
[INFO] [stdout]    --> ch18_patterns/src/main.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout] 148 |             setting_value = new_setting_value;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:257:5
[INFO] [stdout]     |
[INFO] [stdout] 257 |     y: i32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 258 |     z: i32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:262:5
[INFO] [stdout]     |
[INFO] [stdout] 262 |     Quit,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 |     Move { x: i32, y: i32 },
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 264 |     Write(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgb`
[INFO] [stdout]    --> ch18_patterns/src/main.rs:269:5
[INFO] [stdout]     |
[INFO] [stdout] 269 |     Rgb(i32, i32, i32),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.30s
[INFO] running `Command { std: "docker" "inspect" "96d98d5ce470a8a49afdbf31ce8f8380108f6e8abeca7084b9761e82758cfbc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d98d5ce470a8a49afdbf31ce8f8380108f6e8abeca7084b9761e82758cfbc1", kill_on_drop: false }`
[INFO] [stdout] 96d98d5ce470a8a49afdbf31ce8f8380108f6e8abeca7084b9761e82758cfbc1
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1256769b1a7b635f4d1a8de46a70a9fa11f84c475f9539813869b53c55511c00
[INFO] running `Command { std: "docker" "start" "-a" "1256769b1a7b635f4d1a8de46a70a9fa11f84c475f9539813869b53c55511c00", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> ch11_tests/src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     value: u32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> ch18_patterns/src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         'a' ... 'j' => println!("Early ASCII letter"),
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> ch18_patterns/src/main.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         'k' ... 'z' => println!("Late ASCII letter"),
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> ch18_patterns/src/main.rs:221:50
[INFO] [stderr]     |
[INFO] [stderr] 221 |         HelloMessage::Hello { id: id_variable @ 3...7 } => {
[INFO] [stderr]     |                                                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> ch18_patterns/src/main.rs:225:37
[INFO] [stderr]     |
[INFO] [stderr] 225 |         HelloMessage::Hello { id: 10...12 } => {
[INFO] [stderr]     |                                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `setting_value` is never read
[INFO] [stderr]    --> ch18_patterns/src/main.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |             setting_value = new_setting_value;
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `y`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:257:5
[INFO] [stderr]     |
[INFO] [stderr] 257 |     y: i32,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `z`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:258:5
[INFO] [stderr]     |
[INFO] [stderr] 258 |     z: i32,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quit`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:262:5
[INFO] [stderr]     |
[INFO] [stderr] 262 |     Quit,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Move`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:263:5
[INFO] [stderr]     |
[INFO] [stderr] 263 |     Move { x: i32, y: i32 },
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Write`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     Write(String),
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rgb`
[INFO] [stderr]    --> ch18_patterns/src/main.rs:269:5
[INFO] [stderr]     |
[INFO] [stderr] 269 |     Rgb(i32, i32, i32),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> ch11_tests/src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     value: u32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Alaska`
[INFO] [stderr]   --> ch06_enums/src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Alaska,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Penny`
[INFO] [stderr]   --> ch06_enums/src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Penny,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nickel`
[INFO] [stderr]   --> ch06_enums/src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Nickel,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dime`
[INFO] [stderr]   --> ch06_enums/src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     Dime,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MAX_POINTS`
[INFO] [stderr]  --> ch03a_variables/src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const MAX_POINTS: u128 = 200_000;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Context`
[INFO] [stderr]  --> ch19_advancedfeatures/src/lifetimes.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Context<'s>(&'s str);
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> ch19_advancedfeatures/src/lifetimes.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Parser<'c, 's: 'c> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parse`
[INFO] [stderr]  --> ch19_advancedfeatures/src/lifetimes.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn parse(&self) -> Result<(), &'s str> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_context`
[INFO] [stderr]   --> ch19_advancedfeatures/src/lifetimes.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn parse_context(context: Context) -> Result<(), &str> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `diameter`
[INFO] [stderr]   --> ch19_advancedfeatures/src/lifetimes.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     diameter: &'a i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `StrWrap`
[INFO] [stderr]   --> ch19_advancedfeatures/src/lifetimes.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct StrWrap<'a>(&'a str);
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> ch19_advancedfeatures/src/lifetimes.rs:34:4
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn foo<'a>(string: &'a str) -> StrWrap<'a> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo_anon_lifetime`
[INFO] [stderr]   --> ch19_advancedfeatures/src/lifetimes.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn foo_anon_lifetime(string: &str) -> StrWrap<'_> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]  --> ch17_objectoriented/src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     width: u32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> ch17_objectoriented/src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     height: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch01_getting_started-3d26ceead6e9c1f4)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch02_guessing_game-9770e0ff6fd58b23)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch03a_variables-5a1d81d7f613c44d)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
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[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch03b_functions-543b40940e5e5078)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch03c_branches-69e79d7493c185c8)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch04a_ownership-fefa5d1507a13ac8)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch04b_slices-a555d912176df598)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch05_structs-7dd2d0a4670e3655)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch06_enums-7c0779cb86c4626a)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch07_modules-a6e229c41266e751)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::client_can_connect ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch07_modules-75bcea8e5dd8bc6b)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch08_collections-aac5856826ac4cb3)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch09_errors-81d525fd0e4a7e6c)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch10_generics-ae8ed100701fd303)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch11_tests-0b0c72eb047b871b)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::expensive_failing_test ... ignored
[INFO] [stdout] test tests::failure ... ok
[INFO] [stdout] test tests::can_access_private_fn ... ok
[INFO] [stdout] test tests::assertions ... ok
[INFO] [stdout] test tests::greeting_contains_name ... ok
[INFO] [stdout] test tests::it_adds_two ... ok
[INFO] [stdout] test tests::smaller_cannot_hold_larger ... ok
[INFO] [stdout] test tests::using_result ... ok
[INFO] [stdout] test tests::larger_can_hold_smaller ... ok
[INFO] [stdout] test tests::greater_than_100 ... ok
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-f279f9d35985b886)
[INFO] [stdout] test tests::panics_on_small ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch12_minigrep-55823a52d2a4670d)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_adds_two ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::one_result ... ok
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch12_minigrep-07bbd0dfc18404f7)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch13a_functional-383e3d83b8676a9f)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test iterators::tests::using_other_iterator_methods ... ok
[INFO] [stdout] test iterators::tests::filters_by_size ... ok
[INFO] [stdout] test iterators::tests::calling_next_directly ... ok
[INFO] [stdout] test iterators::tests::iterator_sum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch13b_minigrep2-7aa8343b2d598b6b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch13b_minigrep2-d206b9d5716e77b4)
[INFO] [stdout] test tests::one_result ... ok
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch14a_adder-cff63a5cfc63ce91)
[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; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch14b_add_one-2c0c152d41dc8c03)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch15_smartpointers-33e2f4575d77da82)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test refcell::tests::it_sends_an_over_75_percent_warning ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch16_concurrency-71690603933faab9)
[INFO] [stdout] test refcell::tests::it_panics_when_multi_mut_borrow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch17_objectoriented-d8794eea3bdd2768)
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch17_objectoriented-930c6f462656dea7)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch18_patterns-74a1a1df4536e185)
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch19_advacedfeatures-7cf5a6d5c5c3feb1)
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch20_webserver-8dcd8aa9f42cb278)
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[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
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[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ch20_webserver-3c30daff92d8c32b)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ch14b_add_one
[INFO] [stdout] running 0 tests
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[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ch12_minigrep
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[INFO] [stderr]    Doc-tests ch11_tests
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[INFO] [stderr]    Doc-tests ch13b_minigrep2
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[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ch17_objectoriented
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ch20_webserver
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ch07_modules
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[INFO] running `Command { std: "docker" "inspect" "1256769b1a7b635f4d1a8de46a70a9fa11f84c475f9539813869b53c55511c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1256769b1a7b635f4d1a8de46a70a9fa11f84c475f9539813869b53c55511c00", kill_on_drop: false }`
[INFO] [stdout] 1256769b1a7b635f4d1a8de46a70a9fa11f84c475f9539813869b53c55511c00