[INFO] cloning repository https://github.com/zasekle/rust_book_chapter_10
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zasekle/rust_book_chapter_10" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzasekle%2Frust_book_chapter_10", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzasekle%2Frust_book_chapter_10'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 535480682c9232ba707fdb6275401bcda9650e21
[INFO] checking zasekle/rust_book_chapter_10 against master#b44e14f762fd4062faeba97f8f2bc470298ec1ac for pr-135331
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzasekle%2Frust_book_chapter_10" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zasekle/rust_book_chapter_10 on toolchain b44e14f762fd4062faeba97f8f2bc470298ec1ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zasekle/rust_book_chapter_10
[INFO] finished tweaking git repo https://github.com/zasekle/rust_book_chapter_10
[INFO] tweaked toml for git repo https://github.com/zasekle/rust_book_chapter_10 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zasekle/rust_book_chapter_10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4e0ca80588c31f9886e300e3c814d05201fe335b9b83be717a7c7ce1bf25025
[INFO] running `Command { std: "docker" "start" "-a" "c4e0ca80588c31f9886e300e3c814d05201fe335b9b83be717a7c7ce1bf25025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4e0ca80588c31f9886e300e3c814d05201fe335b9b83be717a7c7ce1bf25025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e0ca80588c31f9886e300e3c814d05201fe335b9b83be717a7c7ce1bf25025", kill_on_drop: false }`
[INFO] [stdout] c4e0ca80588c31f9886e300e3c814d05201fe335b9b83be717a7c7ce1bf25025
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+b44e14f762fd4062faeba97f8f2bc470298ec1ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41ced8e7a8eef45fcb428a471be817faeeefc81039dbef4bc0271712acbe41bb
[INFO] running `Command { std: "docker" "start" "-a" "41ced8e7a8eef45fcb428a471be817faeeefc81039dbef4bc0271712acbe41bb", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_book_chapter_10 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/main.rs:173:34
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn get_distance_and_area(shape: &(impl Shape + Display)) {}
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/main.rs:173:34
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn get_distance_and_area(shape: &(impl Shape + Display)) {}
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `height` and `width` are never read
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     struct Rectangle<T> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 29 |         height: T,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 30 |         width: T,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `base` and `height` are never read
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     struct Triangle<T, U> {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 47 |         base: T,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 48 |         height: U,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Triangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `height` and `width` are never read
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     struct Rectangle<T> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 29 |         height: T,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 30 |         width: T,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Blue` and `Red` are never constructed
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     enum PrimaryColors<T> {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 61 |         Yellow(T),
[INFO] [stdout] 62 |         Blue(T),
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 63 |         Red(T),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PrimaryColors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `base` and `height` are never used
[INFO] [stdout]   --> src/main.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     impl Triangle<isize, isize> {
[INFO] [stdout]    |     --------------------------- methods in this implementation
[INFO] [stdout] 86 |         fn base(&self) -> &isize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |         fn height(&self) -> &isize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `base` and `height` are never read
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     struct Triangle<T, U> {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 47 |         base: T,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 48 |         height: U,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Triangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_distance_and_area` is never used
[INFO] [stdout]    --> src/main.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn get_distance_and_area(shape: &(impl Shape + Display)) {}
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/main.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     struct Pair<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Blue` and `Red` are never constructed
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     enum PrimaryColors<T> {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 61 |         Yellow(T),
[INFO] [stdout] 62 |         Blue(T),
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 63 |         Red(T),
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PrimaryColors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:204:12
[INFO] [stdout]     |
[INFO] [stdout] 203 |     impl<T> Pair<T> {
[INFO] [stdout]     |     --------------- associated function in this implementation
[INFO] [stdout] 204 |         fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `base` and `height` are never used
[INFO] [stdout]   --> src/main.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     impl Triangle<isize, isize> {
[INFO] [stdout]    |     --------------------------- methods in this implementation
[INFO] [stdout] 86 |         fn base(&self) -> &isize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |         fn height(&self) -> &isize {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/main.rs:211:12
[INFO] [stdout]     |
[INFO] [stdout] 210 |     impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     |     ------------------------------------- method in this implementation
[INFO] [stdout] 211 |         fn cmp_display(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_distance_and_area` is never used
[INFO] [stdout]    --> src/main.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn get_distance_and_area(shape: &(impl Shape + Display)) {}
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/main.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     struct Pair<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:204:12
[INFO] [stdout]     |
[INFO] [stdout] 203 |     impl<T> Pair<T> {
[INFO] [stdout]     |     --------------- associated function in this implementation
[INFO] [stdout] 204 |         fn new(x: T, y: T) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/main.rs:211:12
[INFO] [stdout]     |
[INFO] [stdout] 210 |     impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     |     ------------------------------------- method in this implementation
[INFO] [stdout] 211 |         fn cmp_display(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "41ced8e7a8eef45fcb428a471be817faeeefc81039dbef4bc0271712acbe41bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ced8e7a8eef45fcb428a471be817faeeefc81039dbef4bc0271712acbe41bb", kill_on_drop: false }`
[INFO] [stdout] 41ced8e7a8eef45fcb428a471be817faeeefc81039dbef4bc0271712acbe41bb