[INFO] fetching crate rust_programming_book 0.1.1...
[INFO] testing rust_programming_book-0.1.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate rust_programming_book 0.1.1 into /workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_programming_book 0.1.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0060d9d590f3a2f9bcbd67a35da7a4d20ed95f199d95650eb91d564d07a0e58b
[INFO] running `Command { std: "docker" "start" "-a" "0060d9d590f3a2f9bcbd67a35da7a4d20ed95f199d95650eb91d564d07a0e58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0060d9d590f3a2f9bcbd67a35da7a4d20ed95f199d95650eb91d564d07a0e58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0060d9d590f3a2f9bcbd67a35da7a4d20ed95f199d95650eb91d564d07a0e58b", kill_on_drop: false }`
[INFO] [stdout] 0060d9d590f3a2f9bcbd67a35da7a4d20ed95f199d95650eb91d564d07a0e58b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94dd76af4e25bd752ff53c1d7245c4a56a9a2ffa3a0ac995abf0248d39c64c29
[INFO] running `Command { std: "docker" "start" "-a" "94dd76af4e25bd752ff53c1d7245c4a56a9a2ffa3a0ac995abf0248d39c64c29", 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 num-integer v0.1.45
[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 rand_chacha v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.22
[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)]` (part of `#[warn(unused)]`) 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 3.82s
[INFO] running `Command { std: "docker" "inspect" "94dd76af4e25bd752ff53c1d7245c4a56a9a2ffa3a0ac995abf0248d39c64c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dd76af4e25bd752ff53c1d7245c4a56a9a2ffa3a0ac995abf0248d39c64c29", kill_on_drop: false }`
[INFO] [stdout] 94dd76af4e25bd752ff53c1d7245c4a56a9a2ffa3a0ac995abf0248d39c64c29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7eedb069516b1315c41510be5d3daa67836aeea7a63e62bc0097735ac24ad28
[INFO] running `Command { std: "docker" "start" "-a" "a7eedb069516b1315c41510be5d3daa67836aeea7a63e62bc0097735ac24ad28", 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)]` (part of `#[warn(unused)]`) 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: 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "a7eedb069516b1315c41510be5d3daa67836aeea7a63e62bc0097735ac24ad28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7eedb069516b1315c41510be5d3daa67836aeea7a63e62bc0097735ac24ad28", kill_on_drop: false }`
[INFO] [stdout] a7eedb069516b1315c41510be5d3daa67836aeea7a63e62bc0097735ac24ad28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 02dfc2395305e99c52214c1df8e0dc5236760eb0f2eac6f943dcfd709c4db70b
[INFO] running `Command { std: "docker" "start" "-a" "02dfc2395305e99c52214c1df8e0dc5236760eb0f2eac6f943dcfd709c4db70b", kill_on_drop: false }`
[INFO] [stderr] warning: method `feed` is never used
[INFO] [stderr]  --> src/impl_dyn.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub trait Animal {
[INFO] [stderr]   |           ------ method in this trait
[INFO] [stderr] 3 |     fn feed(&self) -> &str {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `SomeTraits` is never used
[INFO] [stderr]  --> src/traits.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub trait SomeTraits {
[INFO] [stderr]   |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cow` is never constructed
[INFO] [stderr]   --> src/traits.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Cow<'a> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Dog`
[INFO] [stderr]  --> tests/integration_test.rs:8:52
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rust_programming_book::impl_dyn::{Animal, Cow, Dog, Herbivore};
[INFO] [stderr]   |                                                    ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_programming_book` (bin "rust_programming_book" test) generated 3 warnings
[INFO] [stderr] warning: `rust_programming_book` (test "integration_test") generated 1 warning (run `cargo fix --test "integration_test" -p rust_programming_book` to apply 1 suggestion)
[INFO] [stderr] warning: `rust_programming_book` (bin "rust_programming_book") generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_programming_book-47b81abee7d1f312)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::can_hold_smaller ... ok
[INFO] [stdout] test closure::fn_once_for_scalar_type ... ok
[INFO] [stdout] test tests::testing_closure ... ok
[INFO] [stdout] test tests::testing_private_func ... ok
[INFO] [stdout] test tests::using_enum ... ok
[INFO] [stdout] test tests::exploration ... ok
[INFO] [stdout] test tests::should_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_programming_book-885bc04b3f410053)
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-1fc6dd446a325446)
[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 3 tests
[INFO] [stdout] test dyn_impl_testing ... ok
[INFO] [stdout] test factorial_testing ... ok
[INFO] [stdout] test integration_adds_ten ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_programming_book
[INFO] [stderr] warning: unexpected character `=`
[INFO] [stderr]  --> src/crates.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / /// finds the factorial of the entered number
[INFO] [stderr] 2 | | ///
[INFO] [stderr] 3 | | /// # Example
[INFO] [stderr] 4 | | /// ``` let x = 4;
[INFO] [stderr] 5 | | /// let factorial = rust_programming_book::crates::fact(x);
[INFO] [stderr] 6 | | /// assert_eq!(factorial, 24)
[INFO] [stderr] 7 | | /// ```
[INFO] [stderr]   | |_______^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(rustdoc::invalid_codeblock_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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] running `Command { std: "docker" "inspect" "02dfc2395305e99c52214c1df8e0dc5236760eb0f2eac6f943dcfd709c4db70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02dfc2395305e99c52214c1df8e0dc5236760eb0f2eac6f943dcfd709c4db70b", kill_on_drop: false }`
[INFO] [stdout] 02dfc2395305e99c52214c1df8e0dc5236760eb0f2eac6f943dcfd709c4db70b