[INFO] fetching crate challenge-prompt 0.2.0... [INFO] testing challenge-prompt-0.2.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041 [INFO] extracting crate challenge-prompt 0.2.0 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate challenge-prompt 0.2.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate challenge-prompt 0.2.0 [INFO] finished tweaking crates.io crate challenge-prompt 0.2.0 [INFO] tweaked toml for crates.io crate challenge-prompt 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded predicates v0.9.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c38c608017bb1ae401e7b61e0bbe76e991fd619cab436fa40a36d988bb60b609 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "c38c608017bb1ae401e7b61e0bbe76e991fd619cab436fa40a36d988bb60b609", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c38c608017bb1ae401e7b61e0bbe76e991fd619cab436fa40a36d988bb60b609", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c38c608017bb1ae401e7b61e0bbe76e991fd619cab436fa40a36d988bb60b609", kill_on_drop: false }` [INFO] [stdout] c38c608017bb1ae401e7b61e0bbe76e991fd619cab436fa40a36d988bb60b609 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1f577642b8f983f3f89f6e2cbdc483203ce4a9f4c7afdc8d8098b8cb62a699b8 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1f577642b8f983f3f89f6e2cbdc483203ce4a9f4c7afdc8d8098b8cb62a699b8", kill_on_drop: false }` [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling challenge-prompt v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/lib.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 40 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] ... [INFO] [stdout] 55 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.88s [INFO] running `Command { std: "docker" "inspect" "1f577642b8f983f3f89f6e2cbdc483203ce4a9f4c7afdc8d8098b8cb62a699b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f577642b8f983f3f89f6e2cbdc483203ce4a9f4c7afdc8d8098b8cb62a699b8", kill_on_drop: false }` [INFO] [stdout] 1f577642b8f983f3f89f6e2cbdc483203ce4a9f4c7afdc8d8098b8cb62a699b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 04c29e95d543859f39150696b0dc8ad0550ce161bafc2b9a8ea8b0bcab8080cd [INFO] running `Command { std: "docker" "start" "-a" "04c29e95d543859f39150696b0dc8ad0550ce161bafc2b9a8ea8b0bcab8080cd", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling predicates-core v0.9.0 [INFO] [stderr] Compiling escargot v0.3.1 [INFO] [stderr] Compiling normalize-line-endings v0.2.2 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/lib.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 40 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] ... [INFO] [stdout] 55 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v0.9.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling float-cmp v0.4.0 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling predicates v0.9.1 [INFO] [stderr] Compiling assert_cmd v0.9.1 [INFO] [stderr] Compiling challenge-prompt v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/lib.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 40 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] ... [INFO] [stdout] 55 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 15.48s [INFO] running `Command { std: "docker" "inspect" "04c29e95d543859f39150696b0dc8ad0550ce161bafc2b9a8ea8b0bcab8080cd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04c29e95d543859f39150696b0dc8ad0550ce161bafc2b9a8ea8b0bcab8080cd", kill_on_drop: false }` [INFO] [stdout] 04c29e95d543859f39150696b0dc8ad0550ce161bafc2b9a8ea8b0bcab8080cd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 774e7c734fa5d69cb101d71efee67e933fad9a4df83b5f427801605784f9c9c1 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "774e7c734fa5d69cb101d71efee67e933fad9a4df83b5f427801605784f9c9c1", kill_on_drop: false }` [INFO] [stderr] warning: the item `rand` is imported redundantly [INFO] [stderr] --> src/lib.rs:55:13 [INFO] [stderr] | [INFO] [stderr] 40 | extern crate rand; [INFO] [stderr] | ------------------ the item `rand` is already imported here [INFO] [stderr] ... [INFO] [stderr] 55 | use rand; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: the item `rand` is imported redundantly [INFO] [stderr] --> src/lib.rs:55:13 [INFO] [stderr] | [INFO] [stderr] 40 | extern crate rand; [INFO] [stderr] | ------------------ the item `rand` is already imported here [INFO] [stderr] ... [INFO] [stderr] 55 | use rand; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/challenge_prompt-23f15746aad6b325) [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test tests::phrase_challenge ... ok [INFO] [stdout] test tests::arithmetic_challenge ... ok [INFO] [stdout] test tests::yes_no_challenge ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/challenge_prompt-1c63f3160533e21d) [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] [stderr] Doc-tests challenge-prompt [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - (line 19) ... ignored [INFO] [stdout] test src/lib.rs - (line 32) - compile ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.15s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "774e7c734fa5d69cb101d71efee67e933fad9a4df83b5f427801605784f9c9c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "774e7c734fa5d69cb101d71efee67e933fad9a4df83b5f427801605784f9c9c1", kill_on_drop: false }` [INFO] [stdout] 774e7c734fa5d69cb101d71efee67e933fad9a4df83b5f427801605784f9c9c1