[INFO] fetching crate rust_programming_book 0.1.1...
[INFO] building rust_programming_book-0.1.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate rust_programming_book 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate rust_programming_book 0.1.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_programming_book 0.1.1
[INFO] finished tweaking crates.io crate rust_programming_book 0.1.1
[INFO] tweaked toml for crates.io crate rust_programming_book 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate rust_programming_book 0.1.1 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fdfd1eb39aa9749bc87338a6006306aacd31a949b078c1a9083d176ea9c3848
[INFO] running `Command { std: "docker" "start" "-a" "4fdfd1eb39aa9749bc87338a6006306aacd31a949b078c1a9083d176ea9c3848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fdfd1eb39aa9749bc87338a6006306aacd31a949b078c1a9083d176ea9c3848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fdfd1eb39aa9749bc87338a6006306aacd31a949b078c1a9083d176ea9c3848", kill_on_drop: false }`
[INFO] [stdout] 4fdfd1eb39aa9749bc87338a6006306aacd31a949b078c1a9083d176ea9c3848
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffb25a9ac5bb723365ed5fb33ed10ad2327abfe927ebf633e728f13227a56428
[INFO] running `Command { std: "docker" "start" "-a" "ffb25a9ac5bb723365ed5fb33ed10ad2327abfe927ebf633e728f13227a56428", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling iana-time-zone v0.1.50
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling chrono v0.4.22
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rust_programming_book v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `feed` is never used
[INFO] [stdout]  --> src/impl_dyn.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Animal {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 3 |     fn feed(&self) -> &str {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_lovely` and `is_big_enough` are never used
[INFO] [stdout]   --> src/traits.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait SomeTraits {
[INFO] [stdout]    |           ---------- methods in this trait
[INFO] [stdout] 9  |     fn is_lovely(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     fn is_big_enough(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `age` and `name` are never read
[INFO] [stdout]   --> src/traits.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Cow<'a> {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 15 |     pub age: i8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 16 |     pub height: f32,
[INFO] [stdout] 17 |     pub name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "ffb25a9ac5bb723365ed5fb33ed10ad2327abfe927ebf633e728f13227a56428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffb25a9ac5bb723365ed5fb33ed10ad2327abfe927ebf633e728f13227a56428", kill_on_drop: false }`
[INFO] [stdout] ffb25a9ac5bb723365ed5fb33ed10ad2327abfe927ebf633e728f13227a56428
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0efbdaf241f9a462c7af40b2f390217aae421217f5002ee7a802da7152e6526f
[INFO] running `Command { std: "docker" "start" "-a" "0efbdaf241f9a462c7af40b2f390217aae421217f5002ee7a802da7152e6526f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_programming_book v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `feed` is never used
[INFO] [stdout]  --> src/impl_dyn.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Animal {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 3 |     fn feed(&self) -> &str {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_lovely` and `is_big_enough` are never used
[INFO] [stdout]   --> src/traits.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait SomeTraits {
[INFO] [stdout]    |           ---------- methods in this trait
[INFO] [stdout] 9  |     fn is_lovely(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     fn is_big_enough(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `age` and `name` are never read
[INFO] [stdout]   --> src/traits.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Cow<'a> {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 15 |     pub age: i8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 16 |     pub height: f32,
[INFO] [stdout] 17 |     pub name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Dog`
[INFO] [stdout]  --> tests/integration_test.rs:8:52
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rust_programming_book::impl_dyn::{Animal, Cow, Dog, Herbivore};
[INFO] [stdout]   |                                                    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `feed` is never used
[INFO] [stdout]  --> src/impl_dyn.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub trait Animal {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] 3 |     fn feed(&self) -> &str {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_lovely` and `is_big_enough` are never used
[INFO] [stdout]   --> src/traits.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait SomeTraits {
[INFO] [stdout]    |           ---------- methods in this trait
[INFO] [stdout] 9  |     fn is_lovely(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     fn is_big_enough(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `age` and `name` are never read
[INFO] [stdout]   --> src/traits.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Cow<'a> {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 15 |     pub age: i8,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 16 |     pub height: f32,
[INFO] [stdout] 17 |     pub name: &'a str,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "0efbdaf241f9a462c7af40b2f390217aae421217f5002ee7a802da7152e6526f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efbdaf241f9a462c7af40b2f390217aae421217f5002ee7a802da7152e6526f", kill_on_drop: false }`
[INFO] [stdout] 0efbdaf241f9a462c7af40b2f390217aae421217f5002ee7a802da7152e6526f