[INFO] fetching crate cow-cards-rs 0.1.0...
[INFO] testing cow-cards-rs-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate cow-cards-rs 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate cow-cards-rs 0.1.0
[INFO] finished tweaking crates.io crate cow-cards-rs 0.1.0
[INFO] tweaked toml for crates.io crate cow-cards-rs 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cow-cards-rs 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e480122c834e7d12cf0503fc088ab462c5e531e7bfad512a5ab1c112a30827f9
[INFO] running `Command { std: "docker" "start" "-a" "e480122c834e7d12cf0503fc088ab462c5e531e7bfad512a5ab1c112a30827f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e480122c834e7d12cf0503fc088ab462c5e531e7bfad512a5ab1c112a30827f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e480122c834e7d12cf0503fc088ab462c5e531e7bfad512a5ab1c112a30827f9", kill_on_drop: false }`
[INFO] [stdout] e480122c834e7d12cf0503fc088ab462c5e531e7bfad512a5ab1c112a30827f9
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d22f492807713826698738d50c7b6a8f81a6e5d3c710ad95aa6c4324f2f89416
[INFO] running `Command { std: "docker" "start" "-a" "d22f492807713826698738d50c7b6a8f81a6e5d3c710ad95aa6c4324f2f89416", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow-cards-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]  --> src/cards.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Suit {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rank` is never used
[INFO] [stdout]   --> src/cards.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Rank {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/cards.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Card {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/cards.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Deck {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stdout]    --> src/cards.rs:40:12
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Deck {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  40 |     pub fn new() -> Deck {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "d22f492807713826698738d50c7b6a8f81a6e5d3c710ad95aa6c4324f2f89416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d22f492807713826698738d50c7b6a8f81a6e5d3c710ad95aa6c4324f2f89416", kill_on_drop: false }`
[INFO] [stdout] d22f492807713826698738d50c7b6a8f81a6e5d3c710ad95aa6c4324f2f89416
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acf0ba358e4384671780d123b9d7209f56b75bd51116ad86b4e06f36ad201f28
[INFO] running `Command { std: "docker" "start" "-a" "acf0ba358e4384671780d123b9d7209f56b75bd51116ad86b4e06f36ad201f28", kill_on_drop: false }`
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]  --> src/cards.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Suit {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rank` is never used
[INFO] [stdout]   --> src/cards.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Rank {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/cards.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Card {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/cards.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Deck {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cow-cards-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stdout]    --> src/cards.rs:40:12
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Deck {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  40 |     pub fn new() -> Deck {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/cards.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Suit` is never used
[INFO] [stdout]  --> src/cards.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Suit {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rank` is never used
[INFO] [stdout]   --> src/cards.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Rank {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Card` is never constructed
[INFO] [stdout]   --> src/cards.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Card {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]   --> src/cards.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Deck {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stdout]    --> src/cards.rs:40:12
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Deck {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  40 |     pub fn new() -> Deck {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "acf0ba358e4384671780d123b9d7209f56b75bd51116ad86b4e06f36ad201f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf0ba358e4384671780d123b9d7209f56b75bd51116ad86b4e06f36ad201f28", kill_on_drop: false }`
[INFO] [stdout] acf0ba358e4384671780d123b9d7209f56b75bd51116ad86b4e06f36ad201f28
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a2c31d5d4052ef747cebfd0b91a83f32dcd05409ab5c32ae6dd1737991b0d65c
[INFO] running `Command { std: "docker" "start" "-a" "a2c31d5d4052ef747cebfd0b91a83f32dcd05409ab5c32ae6dd1737991b0d65c", kill_on_drop: false }`
[INFO] [stderr] warning: enum `Suit` is never used
[INFO] [stderr]  --> src/cards.rs:4:6
[INFO] [stderr]   |
[INFO] [stderr] 4 | enum Suit {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Rank` is never used
[INFO] [stderr]   --> src/cards.rs:12:6
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Rank {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Card` is never constructed
[INFO] [stderr]   --> src/cards.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct Card {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Deck` is never constructed
[INFO] [stderr]   --> src/cards.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | struct Deck {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `shuffle`, `shuffle_mut`, `draw`, and `draw_mut` are never used
[INFO] [stderr]    --> src/cards.rs:40:12
[INFO] [stderr]     |
[INFO] [stderr]  39 | impl Deck {
[INFO] [stderr]     | --------- associated items in this implementation
[INFO] [stderr]  40 |     pub fn new() -> Deck {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr]  99 |     pub fn shuffle(&self) -> Deck {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |     pub fn shuffle_mut(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 111 |     pub fn draw(&self) -> (Option<Card>, Deck) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |     pub fn draw_mut(&mut self) -> Option<Card> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `cow-cards-rs` (lib) generated 5 warnings
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/cards.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cow-cards-rs` (lib test) generated 6 warnings (5 duplicates) (run `cargo fix --lib -p cow-cards-rs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cow_cards_rs-ee4600a3668c4dd5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test cards::tests::test_draw ... ok
[INFO] [stdout] test cards::tests::test_shuffle ... 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]    Doc-tests cow_cards_rs
[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" "a2c31d5d4052ef747cebfd0b91a83f32dcd05409ab5c32ae6dd1737991b0d65c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2c31d5d4052ef747cebfd0b91a83f32dcd05409ab5c32ae6dd1737991b0d65c", kill_on_drop: false }`
[INFO] [stdout] a2c31d5d4052ef747cebfd0b91a83f32dcd05409ab5c32ae6dd1737991b0d65c