[INFO] cloning repository https://github.com/sdsc-ordes/rust-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdsc-ordes/rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdsc-ordes%2Frust-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdsc-ordes%2Frust-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d0c14665da7fd48c92f98810a7cf64ca36b34e2
[INFO] testing sdsc-ordes/rust-workshop against beta-2025-02-18 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdsc-ordes%2Frust-workshop" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdsc-ordes/rust-workshop on toolchain beta-2025-02-18
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-02-18" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/sdsc-ordes/rust-workshop
[INFO] finished tweaking git repo https://github.com/sdsc-ordes/rust-workshop
[INFO] tweaked toml for git repo https://github.com/sdsc-ordes/rust-workshop written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sdsc-ordes/rust-workshop 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" "+beta-2025-02-18" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c861e6f8fbedffda52e10316ecac90a1797f7712aec931b4dff3601f2536ab94
[INFO] running `Command { std: "docker" "start" "-a" "c861e6f8fbedffda52e10316ecac90a1797f7712aec931b4dff3601f2536ab94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c861e6f8fbedffda52e10316ecac90a1797f7712aec931b4dff3601f2536ab94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c861e6f8fbedffda52e10316ecac90a1797f7712aec931b4dff3601f2536ab94", kill_on_drop: false }`
[INFO] [stdout] c861e6f8fbedffda52e10316ecac90a1797f7712aec931b4dff3601f2536ab94
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb7b777031fd7c5cbf8b26a00aa509445e16a4105344c9bdeca3af6d7f2e516b
[INFO] running `Command { std: "docker" "start" "-a" "eb7b777031fd7c5cbf8b26a00aa509445e16a4105344c9bdeca3af6d7f2e516b", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `blanket-implementation v0.1.0 (/opt/rustwide/workdir/exercises/blanket-implementation)` has the same output filename as the bin target `01` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `blanket-implementation v0.1.0 (/opt/rustwide/workdir/exercises/blanket-implementation)` has the same output filename as the bin target `01` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `01` in package `blanket-implementation v0.1.0 (/opt/rustwide/workdir/exercises/blanket-implementation)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `01` in package `blanket-implementation v0.1.0 (/opt/rustwide/workdir/exercises/blanket-implementation)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `02` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `02` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `03` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `03` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `04` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `04` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `05` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)` has the same output filename as the bin target `05` in package `basic-syntax v0.1.0 (/opt/rustwide/workdir/exercises/basic-syntax)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)` has the same output filename as the bin target `01` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)` has the same output filename as the bin target `01` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)` has the same output filename as the bin target `02` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)` has the same output filename as the bin target `02` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)` has the same output filename as the bin target `01` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)` has the same output filename as the bin target `01` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)` has the same output filename as the bin target `02` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)` has the same output filename as the bin target `02` in package `boxed-data v0.1.0 (/opt/rustwide/workdir/exercises/boxed-data)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `01` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `01` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `02` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `02` in package `closures v0.1.0 (/opt/rustwide/workdir/exercises/closures)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `03` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `03` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `04` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `04` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `05` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)` has the same output filename as the bin target `05` in package `borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `drop-with-errors v0.1.0 (/opt/rustwide/workdir/exercises/drop-with-errors)` has the same output filename as the bin target `01` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `drop-with-errors v0.1.0 (/opt/rustwide/workdir/exercises/drop-with-errors)` has the same output filename as the bin target `01` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `extension-traits v0.1.0 (/opt/rustwide/workdir/exercises/extension-traits)` has the same output filename as the bin target `01` in package `drop-with-errors v0.1.0 (/opt/rustwide/workdir/exercises/drop-with-errors)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `extension-traits v0.1.0 (/opt/rustwide/workdir/exercises/extension-traits)` has the same output filename as the bin target `01` in package `drop-with-errors v0.1.0 (/opt/rustwide/workdir/exercises/drop-with-errors)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)` has the same output filename as the bin target `01` in package `extension-traits v0.1.0 (/opt/rustwide/workdir/exercises/extension-traits)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)` has the same output filename as the bin target `01` in package `extension-traits v0.1.0 (/opt/rustwide/workdir/exercises/extension-traits)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)` has the same output filename as the bin target `02` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)` has the same output filename as the bin target `02` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `01` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `01` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `02` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `02` in package `generics v0.1.0 (/opt/rustwide/workdir/exercises/generics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `03` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)` has the same output filename as the bin target `03` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `01` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `01` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `02` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `02` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `03` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `03` in package `lifetimes v0.1.0 (/opt/rustwide/workdir/exercises/lifetimes)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `04` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `04` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `05` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)` has the same output filename as the bin target `05` in package `composite-types v0.1.0 (/opt/rustwide/workdir/exercises/composite-types)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `01` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `01` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `02` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `02` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `03` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `03` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `04` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)` has the same output filename as the bin target `04` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `01` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `01` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `01` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/01.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `02` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `02` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `02` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/02.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `03` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `03` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `03` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/03.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `04` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `04` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `04` in package `options v0.1.0 (/opt/rustwide/workdir/exercises/options)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/04.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `05` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `05` in package `std-traits v0.1.0 (/opt/rustwide/workdir/exercises/std-traits)` has the same output filename as the bin target `05` in package `move-semantics v0.1.0 (/opt/rustwide/workdir/exercises/move-semantics)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/05.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling serde_json v1.0.121
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling borrowing v0.1.0 (/opt/rustwide/workdir/exercises/borrowing)
[INFO] [stderr]    Compiling ring-buffer v0.1.0 (/opt/rustwide/workdir/exercises/ring-buffer)
[INFO] [stdout] error[E0499]: cannot borrow `x` as mutable more than once at a time
[INFO] [stdout]  --> exercises/borrowing/src/bin/01.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y = &mut x;
[INFO] [stdout]   |             ------ first mutable borrow occurs here
[INFO] [stdout] 7 |     let z = &mut x;
[INFO] [stdout]   |             ^^^^^^ second mutable borrow occurs here
[INFO] [stdout] 8 |     *y += 100;
[INFO] [stdout]   |     --------- first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `borrowing` (bin "01") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `make_box` is never used
[INFO] [stdout]   --> exercises/ring-buffer/src/main.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn make_box(reqsize: usize) -> Box<[u8]> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eb7b777031fd7c5cbf8b26a00aa509445e16a4105344c9bdeca3af6d7f2e516b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb7b777031fd7c5cbf8b26a00aa509445e16a4105344c9bdeca3af6d7f2e516b", kill_on_drop: false }`
[INFO] [stdout] eb7b777031fd7c5cbf8b26a00aa509445e16a4105344c9bdeca3af6d7f2e516b