[INFO] fetching crate rust_programming_book 0.1.1...
[INFO] checking rust_programming_book-0.1.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate rust_programming_book 0.1.1 into /workspace/builds/worker-4-tc1/source
[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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_programming_book 0.1.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iana-time-zone v0.1.50
[INFO] [stderr]   Downloaded syn v1.0.101
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a79376ff01ec52668e69ba0de7e54cdb6cc27a7a542702c81a93e2c4d850e97e
[INFO] running `Command { std: "docker" "start" "-a" "a79376ff01ec52668e69ba0de7e54cdb6cc27a7a542702c81a93e2c4d850e97e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a79376ff01ec52668e69ba0de7e54cdb6cc27a7a542702c81a93e2c4d850e97e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a79376ff01ec52668e69ba0de7e54cdb6cc27a7a542702c81a93e2c4d850e97e", kill_on_drop: false }`
[INFO] [stdout] a79376ff01ec52668e69ba0de7e54cdb6cc27a7a542702c81a93e2c4d850e97e
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c81f5f587149085e6c74cc9831041c07469e5fd82384d77a617e2d3a7afe548
[INFO] running `Command { std: "docker" "start" "-a" "3c81f5f587149085e6c74cc9831041c07469e5fd82384d77a617e2d3a7afe548", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking iana-time-zone v0.1.50
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking chrono v0.4.22
[INFO] [stderr]     Checking rust_programming_book v0.1.1 (/opt/rustwide/workdir)
[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: trait `SomeTraits` is never used
[INFO] [stdout]  --> src/traits.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait SomeTraits {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cow` is never constructed
[INFO] [stdout]   --> src/traits.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Cow<'a> {
[INFO] [stdout]    |            ^^^
[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: trait `SomeTraits` is never used
[INFO] [stdout]  --> src/traits.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait SomeTraits {
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cow` is never constructed
[INFO] [stdout]   --> src/traits.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Cow<'a> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.31s
[INFO] running `Command { std: "docker" "inspect" "3c81f5f587149085e6c74cc9831041c07469e5fd82384d77a617e2d3a7afe548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c81f5f587149085e6c74cc9831041c07469e5fd82384d77a617e2d3a7afe548", kill_on_drop: false }`
[INFO] [stdout] 3c81f5f587149085e6c74cc9831041c07469e5fd82384d77a617e2d3a7afe548