[INFO] cloning repository https://github.com/wy15/learnrust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wy15/learnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c601abbfef0db2793015db15173d56d50ac46169 [INFO] testing wy15/learnrust against try#c3758fdc4730d7700b25a13cccff296a08f42c00 for pr-91743 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwy15%2Flearnrust" "/workspace/builds/worker-22/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wy15/learnrust on toolchain c3758fdc4730d7700b25a13cccff296a08f42c00 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/wy15/learnrust [INFO] finished tweaking git repo https://github.com/wy15/learnrust [INFO] tweaked toml for git repo https://github.com/wy15/learnrust written to /workspace/builds/worker-22/source/Cargo.toml [INFO] crate git repo https://github.com/wy15/learnrust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 935fbbe614220ce5518b5af9813017ccf4b094f9511c12bc0f171a87c57eb39c [INFO] running `Command { std: "docker" "start" "-a" "935fbbe614220ce5518b5af9813017ccf4b094f9511c12bc0f171a87c57eb39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "935fbbe614220ce5518b5af9813017ccf4b094f9511c12bc0f171a87c57eb39c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "935fbbe614220ce5518b5af9813017ccf4b094f9511c12bc0f171a87c57eb39c", kill_on_drop: false }` [INFO] [stdout] 935fbbe614220ce5518b5af9813017ccf4b094f9511c12bc0f171a87c57eb39c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ed135cf494017b30091c1dd47bedbeff8c90929c4c0b5f93d1347166571de4fd [INFO] running `Command { std: "docker" "start" "-a" "ed135cf494017b30091c1dd47bedbeff8c90929c4c0b5f93d1347166571de4fd", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Compiling pkg-config v0.3.24 [INFO] [stderr] Compiling cc v1.0.73 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling pin-project-lite v0.2.8 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling futures-sink v0.3.21 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.7 [INFO] [stderr] Compiling crc32fast v1.3.2 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling adler v1.0.2 [INFO] [stderr] Compiling itoa v1.0.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.7 [INFO] [stderr] Compiling foreign-types-shared v0.1.1 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling openssl v0.10.38 [INFO] [stderr] Compiling slab v0.4.5 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling httparse v1.6.0 [INFO] [stderr] Compiling once_cell v1.9.0 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Compiling pin-utils v0.1.0 [INFO] [stderr] Compiling byteorder v1.4.3 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling matches v0.1.9 [INFO] [stderr] Compiling native-tls v0.2.8 [INFO] [stderr] Compiling futures-io v0.3.21 [INFO] [stderr] Compiling openssl-probe v0.1.5 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling try-lock v0.2.3 [INFO] [stderr] Compiling adler32 v1.2.0 [INFO] [stderr] Compiling httpdate v1.0.2 [INFO] [stderr] Compiling tower-service v0.3.1 [INFO] [stderr] Compiling encoding_rs v0.8.30 [INFO] [stderr] Compiling unicode-bidi v0.3.7 [INFO] [stderr] Compiling ryu v1.0.9 [INFO] [stderr] Compiling weezl v0.1.5 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling jpeg-decoder v0.1.22 [INFO] [stderr] Compiling half v1.8.2 [INFO] [stderr] Compiling color_quant v1.1.0 [INFO] [stderr] Compiling mime v0.3.16 [INFO] [stderr] Compiling lebe v0.5.1 [INFO] [stderr] Compiling ipnet v2.3.1 [INFO] [stderr] Compiling bit_field v0.10.1 [INFO] [stderr] Compiling iter-read v0.3.1 [INFO] [stderr] Compiling smallvec v1.8.0 [INFO] [stderr] Compiling base64 v0.13.0 [INFO] [stderr] Compiling bytemuck v1.8.0 [INFO] [stderr] Compiling scoped_threadpool v0.1.9 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling challenge1 v0.1.0 (/opt/rustwide/workdir/challenge1) [INFO] [stderr] Compiling challenge2 v0.1.0 (/opt/rustwide/workdir/challenge2) [INFO] [stderr] Compiling tracing-core v0.1.22 [INFO] [stderr] Compiling deflate v1.0.0 [INFO] [stderr] Compiling inflate v0.4.5 [INFO] [stderr] Compiling foreign-types v0.3.2 [INFO] [stderr] Compiling tinyvec v1.5.1 [INFO] [stderr] Compiling miniz_oxide v0.5.1 [INFO] [stderr] Compiling lock_api v0.4.6 [INFO] [stderr] Compiling form_urlencoded v1.0.1 [INFO] [stderr] Compiling gif v0.11.3 [INFO] [stderr] Compiling spin v0.9.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling indexmap v1.8.0 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling num-bigint v0.4.3 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling http v0.2.6 [INFO] [stderr] Compiling tracing v0.1.31 [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling png v0.17.5 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling crossbeam-channel v0.5.2 [INFO] [stderr] Compiling openssl-sys v0.9.72 [INFO] [stderr] Compiling bzip2-sys v0.1.11+1.0.8 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling mio v0.8.0 [INFO] [stderr] Compiling socket2 v0.4.4 [INFO] [stderr] Compiling getrandom v0.2.5 [INFO] [stderr] Compiling time v0.1.44 [INFO] [stderr] Compiling unicode-normalization v0.1.19 [INFO] [stderr] Compiling crossbeam-deque v0.8.1 [INFO] [stderr] Compiling nanorand v0.6.1 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling flate2 v1.0.22 [INFO] [stderr] Compiling tokio v1.17.0 [INFO] [stderr] Compiling bzip2 v0.4.3 [INFO] [stderr] Compiling tiff v0.7.1 [INFO] [stderr] Compiling idna v0.2.3 [INFO] [stderr] Compiling http-body v0.4.4 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling url v2.2.2 [INFO] [stderr] Compiling serde_urlencoded v0.7.1 [INFO] [stderr] Compiling challenge3 v0.1.0 (/opt/rustwide/workdir/challenge3) [INFO] [stderr] Compiling serde-pickle v1.1.0 [INFO] [stderr] Compiling challenge8 v0.1.0 (/opt/rustwide/workdir/challenge8) [INFO] [stderr] Compiling jpeg-decoder v0.2.2 [INFO] [stderr] Compiling tokio-util v0.6.9 [INFO] [stderr] Compiling tokio-native-tls v0.3.0 [INFO] [stderr] Compiling pin-project-internal v1.0.10 [INFO] [stderr] Compiling thiserror-impl v1.0.30 [INFO] [stderr] Compiling h2 v0.3.11 [INFO] [stderr] Compiling pin-project v1.0.10 [INFO] [stderr] Compiling thiserror v1.0.30 [INFO] [stderr] Compiling flume v0.10.11 [INFO] [stderr] Compiling zip v0.5.13 [INFO] [stderr] Compiling exr v1.4.1 [INFO] [stderr] Compiling challenge6 v0.1.0 (/opt/rustwide/workdir/challenge6) [INFO] [stderr] Compiling hyper v0.14.17 [INFO] [stderr] Compiling image v0.24.1 [INFO] [stderr] Compiling hyper-tls v0.5.0 [INFO] [stderr] Compiling reqwest v0.11.9 [INFO] [stderr] Compiling challenge7 v0.1.0 (/opt/rustwide/workdir/challenge7) [INFO] [stderr] Compiling challenge4 v0.1.0 (/opt/rustwide/workdir/challenge4) [INFO] [stderr] Compiling challenge5 v0.1.0 (/opt/rustwide/workdir/challenge5) [INFO] [stderr] Compiling challenge v0.1.0 (/opt/rustwide/workdir/challenge) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 23.66s [INFO] running `Command { std: "docker" "inspect" "ed135cf494017b30091c1dd47bedbeff8c90929c4c0b5f93d1347166571de4fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ed135cf494017b30091c1dd47bedbeff8c90929c4c0b5f93d1347166571de4fd", kill_on_drop: false }` [INFO] [stdout] ed135cf494017b30091c1dd47bedbeff8c90929c4c0b5f93d1347166571de4fd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bb64da99a5369302d97358d5f97a0f9eda0a569dcd82dbd97fab201619e345f5 [INFO] running `Command { std: "docker" "start" "-a" "bb64da99a5369302d97358d5f97a0f9eda0a569dcd82dbd97fab201619e345f5", kill_on_drop: false }` [INFO] [stderr] Compiling challenge1 v0.1.0 (/opt/rustwide/workdir/challenge1) [INFO] [stderr] Compiling challenge2 v0.1.0 (/opt/rustwide/workdir/challenge2) [INFO] [stderr] Compiling challenge3 v0.1.0 (/opt/rustwide/workdir/challenge3) [INFO] [stderr] Compiling challenge8 v0.1.0 (/opt/rustwide/workdir/challenge8) [INFO] [stderr] Compiling challenge6 v0.1.0 (/opt/rustwide/workdir/challenge6) [INFO] [stderr] Compiling challenge7 v0.1.0 (/opt/rustwide/workdir/challenge7) [INFO] [stderr] Compiling challenge5 v0.1.0 (/opt/rustwide/workdir/challenge5) [INFO] [stderr] Compiling challenge4 v0.1.0 (/opt/rustwide/workdir/challenge4) [INFO] [stderr] Compiling challenge v0.1.0 (/opt/rustwide/workdir/challenge) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 6.99s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/challenge-bc4ad647f704f1e8) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge1-bea005881124b439) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge2-89322a079bb9c6aa) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge3-e1714e433f3c1d5d) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge4-fee9c2baa9a6901a) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge5-be8afdcdda218c1b) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge6-abb3b573113f91c0) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge7-c109104a76878a6c) [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge8-13824b3daebabc05) [INFO] running `Command { std: "docker" "inspect" "bb64da99a5369302d97358d5f97a0f9eda0a569dcd82dbd97fab201619e345f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb64da99a5369302d97358d5f97a0f9eda0a569dcd82dbd97fab201619e345f5", kill_on_drop: false }` [INFO] [stdout] bb64da99a5369302d97358d5f97a0f9eda0a569dcd82dbd97fab201619e345f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+c3758fdc4730d7700b25a13cccff296a08f42c00" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7ab86f4c6ed4ce8f50f91e2f85b4b86a68b8f8696ce9409e2321dd34ab827de5 [INFO] running `Command { std: "docker" "start" "-a" "7ab86f4c6ed4ce8f50f91e2f85b4b86a68b8f8696ce9409e2321dd34ab827de5", 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] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.27s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/challenge-bc4ad647f704f1e8) [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] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge1-bea005881124b439) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge2-89322a079bb9c6aa) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge3-e1714e433f3c1d5d) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/challenge4-fee9c2baa9a6901a) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::it_works ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- tests::it_works stdout ---- [INFO] [stdout] thread 'tests::it_works' panicked at 'called `Result::unwrap()` on an `Err` value: reqwest::Error { kind: Request, url: Url { scheme: "http", cannot_be_a_base: false, username: "", password: None, host: Some(Domain("www.pythonchallenge.com")), port: None, path: "/pc/def/linkedlist.php", query: Some("nothing=12345"), fragment: None }, source: hyper::Error(Connect, ConnectError("dns error", Custom { kind: Uncategorized, error: "failed to lookup address information: Temporary failure in name resolution" })) }', challenge4/src/lib.rs:37:10 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x563c1d342710 - std::backtrace_rs::backtrace::libunwind::trace::h2c3bc9c840656a34 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 1: 0x563c1d342710 - std::backtrace_rs::backtrace::trace_unsynchronized::h0a70f522b5a3463e [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x563c1d342710 - std::sys_common::backtrace::_print_fmt::he249a79bec407477 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x563c1d342710 - ::fmt::ha9d1970820f5c713 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x563c1d36656c - core::fmt::write::hc4fc655621d59c6c [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/fmt/mod.rs:1194:17 [INFO] [stdout] 5: 0x563c1d33c8b5 - std::io::Write::write_fmt::h766156bfd5935712 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/io/mod.rs:1655:15 [INFO] [stdout] 6: 0x563c1d3441b1 - std::sys_common::backtrace::_print::hfbedb7d14540afb9 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x563c1d3441b1 - std::sys_common::backtrace::print::h1d12b345ae925adb [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x563c1d3441b1 - std::panicking::default_hook::{{closure}}::hbfa91b7f831744dd [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x563c1d343e08 - std::panicking::default_hook::h5186cc1a78166015 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x563c1d34487d - std::panicking::rust_panic_with_hook::h1b346e6d62a347dd [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x563c1d344747 - std::panicking::begin_panic_handler::{{closure}}::hc131d07490c3ebd7 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:588:13 [INFO] [stdout] 12: 0x563c1d342be4 - std::sys_common::backtrace::__rust_end_short_backtrace::hd18b4525708c825e [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x563c1d344472 - rust_begin_unwind [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x563c1ce394f3 - core::panicking::panic_fmt::h2bdc1e1473e094d6 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x563c1ce395e3 - core::result::unwrap_failed::h78dab976b32b845a [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/result.rs:1785:5 [INFO] [stdout] 16: 0x563c1ce3cc0a - core::result::Result::unwrap::hc7096711dd6a9762 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/result.rs:1078:23 [INFO] [stdout] 17: 0x563c1ce3d0ac - challenge4::tests::it_works::h5cf4d987ef5621d9 [INFO] [stdout] at /opt/rustwide/workdir/challenge4/src/lib.rs:33:20 [INFO] [stdout] 18: 0x563c1ce3cfba - challenge4::tests::it_works::{{closure}}::h694a1e9da4cb999a [INFO] [stdout] at /opt/rustwide/workdir/challenge4/src/lib.rs:31:5 [INFO] [stdout] 19: 0x563c1ce3b85e - core::ops::function::FnOnce::call_once::haaed80c2c9182525 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x563c1d31a953 - core::ops::function::FnOnce::call_once::hfa464e74fccacfdb [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x563c1d31a953 - test::__rust_begin_short_backtrace::h2b9d08a5d60802a7 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/test/src/lib.rs:573:5 [INFO] [stdout] 22: 0x563c1d3196ad - as core::ops::function::FnOnce>::call_once::h11665ca350597984 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 23: 0x563c1d3196ad - as core::ops::function::FnOnce<()>>::call_once::h1dd74fd619996a6d [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x563c1d3196ad - std::panicking::try::do_call::h545949b41f3cafdf [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x563c1d3196ad - std::panicking::try::h8a4eee9e99747cca [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x563c1d3196ad - std::panic::catch_unwind::h7a2d4c4bb98e2a33 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x563c1d3196ad - test::run_test_in_process::h43cdbd88d3031d2d [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/test/src/lib.rs:596:18 [INFO] [stdout] 28: 0x563c1d3196ad - test::run_test::run_test_inner::{{closure}}::h7a35ff2a2ef1be40 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/test/src/lib.rs:490:39 [INFO] [stdout] 29: 0x563c1d2e550c - test::run_test::run_test_inner::{{closure}}::h99fa578161f25342 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/test/src/lib.rs:517:37 [INFO] [stdout] 30: 0x563c1d2e550c - std::sys_common::backtrace::__rust_begin_short_backtrace::h51d96e3583c91997 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x563c1d2eb6bf - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h901e06481c3928e8 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/thread/mod.rs:500:17 [INFO] [stdout] 32: 0x563c1d2eb6bf - as core::ops::function::FnOnce<()>>::call_once::h2ab169c9508acc57 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x563c1d2eb6bf - std::panicking::try::do_call::hf0f60551a514f390 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x563c1d2eb6bf - std::panicking::try::h50e945932a8cf417 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x563c1d2eb6bf - std::panic::catch_unwind::hfd1bd35215287444 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x563c1d2eb6bf - std::thread::Builder::spawn_unchecked_::{{closure}}::h79c8bb59e9e6d53e [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/thread/mod.rs:499:30 [INFO] [stdout] 37: 0x563c1d2eb6bf - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc427cbf183995ee4 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x563c1d348f43 - as core::ops::function::FnOnce>::call_once::h03e1f93a163dfab7 [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 39: 0x563c1d348f43 - as core::ops::function::FnOnce>::call_once::h498bd6c4b6ddeafc [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 40: 0x563c1d348f43 - std::sys::unix::thread::Thread::new::thread_start::h36a191afeb7eed3f [INFO] [stdout] at /rustc/c3758fdc4730d7700b25a13cccff296a08f42c00/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7f61fea3c609 - start_thread [INFO] [stdout] 42: 0x7f61fe80a163 - clone [INFO] [stdout] 43: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] tests::it_works [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '-p challenge4 --lib' [INFO] running `Command { std: "docker" "inspect" "7ab86f4c6ed4ce8f50f91e2f85b4b86a68b8f8696ce9409e2321dd34ab827de5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ab86f4c6ed4ce8f50f91e2f85b4b86a68b8f8696ce9409e2321dd34ab827de5", kill_on_drop: false }` [INFO] [stdout] 7ab86f4c6ed4ce8f50f91e2f85b4b86a68b8f8696ce9409e2321dd34ab827de5