[INFO] cloning repository https://github.com/integrational/rust-exercises [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/integrational/rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3735d41deaa0e5f5262c29955d4b09b4ffe02434 [INFO] testing integrational/rust-exercises against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises" "/workspace/builds/worker-98/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/integrational/rust-exercises on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/integrational/rust-exercises [INFO] finished tweaking git repo https://github.com/integrational/rust-exercises [INFO] tweaked toml for git repo https://github.com/integrational/rust-exercises written to /workspace/builds/worker-98/source/Cargo.toml [INFO] crate git repo https://github.com/integrational/rust-exercises already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5ec01437523f8f2fda8ca02fcfb61a42b54dbf1321eb5a7446aca87d19109ada [INFO] running `Command { std: "docker" "start" "-a" "5ec01437523f8f2fda8ca02fcfb61a42b54dbf1321eb5a7446aca87d19109ada", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5ec01437523f8f2fda8ca02fcfb61a42b54dbf1321eb5a7446aca87d19109ada", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5ec01437523f8f2fda8ca02fcfb61a42b54dbf1321eb5a7446aca87d19109ada", kill_on_drop: false }` [INFO] [stdout] 5ec01437523f8f2fda8ca02fcfb61a42b54dbf1321eb5a7446aca87d19109ada [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a77a7b04efe1528ad397e5e92aab5a9cea1374b975a3a429e06699f89e7dae54 [INFO] running `Command { std: "docker" "start" "-a" "a77a7b04efe1528ad397e5e92aab5a9cea1374b975a3a429e06699f89e7dae54", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^ ------- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.69s [INFO] running `Command { std: "docker" "inspect" "a77a7b04efe1528ad397e5e92aab5a9cea1374b975a3a429e06699f89e7dae54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a77a7b04efe1528ad397e5e92aab5a9cea1374b975a3a429e06699f89e7dae54", kill_on_drop: false }` [INFO] [stdout] a77a7b04efe1528ad397e5e92aab5a9cea1374b975a3a429e06699f89e7dae54 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ec9e2c1f136113611d7ea09df3a4c5874dc718d1edd806da4257bf3bb228cc7b [INFO] running `Command { std: "docker" "start" "-a" "ec9e2c1f136113611d7ea09df3a4c5874dc718d1edd806da4257bf3bb228cc7b", kill_on_drop: false }` [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^ ------- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^ ------- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.04s [INFO] running `Command { std: "docker" "inspect" "ec9e2c1f136113611d7ea09df3a4c5874dc718d1edd806da4257bf3bb228cc7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec9e2c1f136113611d7ea09df3a4c5874dc718d1edd806da4257bf3bb228cc7b", kill_on_drop: false }` [INFO] [stdout] ec9e2c1f136113611d7ea09df3a4c5874dc718d1edd806da4257bf3bb228cc7b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3a656a3f694bff0273fab1d5e94a6d88bc3cf5fcdeaebd1d0a6b8ba2d7b4a58f [INFO] running `Command { std: "docker" "start" "-a" "3a656a3f694bff0273fab1d5e94a6d88bc3cf5fcdeaebd1d0a6b8ba2d7b4a58f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/pig_latin.rs:39:17 [INFO] [stderr] | [INFO] [stderr] 31 | match (&self.state, is_word_char(c)) { [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 39 | self.push_word_suffix(*firstc); [INFO] [stderr] | ^^^^ ------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: `exercises` (lib) generated 1 warning [INFO] [stderr] warning: `exercises` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.49s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/exercises-3d5a8e00bc2c3944) [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 (/opt/rustwide/target/debug/deps/int_stats-759e2414d5114a92) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/pig_latin-031af4879acd758c) [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 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 exercises [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" "3a656a3f694bff0273fab1d5e94a6d88bc3cf5fcdeaebd1d0a6b8ba2d7b4a58f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3a656a3f694bff0273fab1d5e94a6d88bc3cf5fcdeaebd1d0a6b8ba2d7b4a58f", kill_on_drop: false }` [INFO] [stdout] 3a656a3f694bff0273fab1d5e94a6d88bc3cf5fcdeaebd1d0a6b8ba2d7b4a58f