[INFO] cloning repository https://github.com/xkef/learning_rust_syntax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xkef/learning_rust_syntax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkef%2Flearning_rust_syntax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkef%2Flearning_rust_syntax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78fb555d416b3e22e2ab2da6b116e30c693918eb
[INFO] testing xkef/learning_rust_syntax against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxkef%2Flearning_rust_syntax" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xkef/learning_rust_syntax on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xkef/learning_rust_syntax
[INFO] finished tweaking git repo https://github.com/xkef/learning_rust_syntax
[INFO] tweaked toml for git repo https://github.com/xkef/learning_rust_syntax written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/xkef/learning_rust_syntax already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.8
[INFO] [stderr]   Downloaded arr_macro_impl v0.1.2
[INFO] [stderr]   Downloaded alga v0.9.1
[INFO] [stderr]   Downloaded num-traits v0.2.8
[INFO] [stderr]   Downloaded matrixmultiply v0.2.2
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded num-complex v0.2.3
[INFO] [stderr]   Downloaded arr_macro v0.1.2
[INFO] [stderr]   Downloaded nalgebra v0.18.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23a26fb1dfb635685190e02a9c1d223a02d560b03db6046b94f9943388291a78
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23a26fb1dfb635685190e02a9c1d223a02d560b03db6046b94f9943388291a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23a26fb1dfb635685190e02a9c1d223a02d560b03db6046b94f9943388291a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23a26fb1dfb635685190e02a9c1d223a02d560b03db6046b94f9943388291a78", kill_on_drop: false }`
[INFO] [stdout] 23a26fb1dfb635685190e02a9c1d223a02d560b03db6046b94f9943388291a78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f05fdcbbb4fdf6a117d70e4b0864bdf2b8c1828ce5f0748094332687b6208e9e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f05fdcbbb4fdf6a117d70e4b0864bdf2b8c1828ce5f0748094332687b6208e9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling matrixmultiply v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling alga v0.9.1
[INFO] [stderr]    Compiling nalgebra v0.18.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.8
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling arr_macro_impl v0.1.2
[INFO] [stderr]    Compiling arr_macro v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling my-crate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.20s
[INFO] running `Command { std: "docker" "inspect" "f05fdcbbb4fdf6a117d70e4b0864bdf2b8c1828ce5f0748094332687b6208e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f05fdcbbb4fdf6a117d70e4b0864bdf2b8c1828ce5f0748094332687b6208e9e", kill_on_drop: false }`
[INFO] [stdout] f05fdcbbb4fdf6a117d70e4b0864bdf2b8c1828ce5f0748094332687b6208e9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65fe33c85c7bdb8c52482621a56059620e9415e68d3a6e17da8ac36fbb7b41d2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "65fe33c85c7bdb8c52482621a56059620e9415e68d3a6e17da8ac36fbb7b41d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling my-crate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "65fe33c85c7bdb8c52482621a56059620e9415e68d3a6e17da8ac36fbb7b41d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65fe33c85c7bdb8c52482621a56059620e9415e68d3a6e17da8ac36fbb7b41d2", kill_on_drop: false }`
[INFO] [stdout] 65fe33c85c7bdb8c52482621a56059620e9415e68d3a6e17da8ac36fbb7b41d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 020823b19628da5a15ad31a9f17cb6d72731250a21dd3425667e92246af8f8bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "020823b19628da5a15ad31a9f17cb6d72731250a21dd3425667e92246af8f8bf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/my_crate-5972a8d0abf8fc93)
[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" "020823b19628da5a15ad31a9f17cb6d72731250a21dd3425667e92246af8f8bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020823b19628da5a15ad31a9f17cb6d72731250a21dd3425667e92246af8f8bf", kill_on_drop: false }`
[INFO] [stdout] 020823b19628da5a15ad31a9f17cb6d72731250a21dd3425667e92246af8f8bf