[INFO] cloning repository https://github.com/ivanmoreau/fastfibo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivanmoreau/fastfibo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanmoreau%2Ffastfibo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanmoreau%2Ffastfibo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44cf73b8f5da8c536e857b693aa4c8b28c135ca3
[INFO] checking ivanmoreau/fastfibo against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanmoreau%2Ffastfibo" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivanmoreau/fastfibo on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ivanmoreau/fastfibo
[INFO] finished tweaking git repo https://github.com/ivanmoreau/fastfibo
[INFO] tweaked toml for git repo https://github.com/ivanmoreau/fastfibo written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/ivanmoreau/fastfibo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0bf8d36db1f056d06e54c3fd50f07624c1f31b7ffd5f7863a5f1f24090f9ccf
[INFO] running `Command { std: "docker" "start" "-a" "e0bf8d36db1f056d06e54c3fd50f07624c1f31b7ffd5f7863a5f1f24090f9ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0bf8d36db1f056d06e54c3fd50f07624c1f31b7ffd5f7863a5f1f24090f9ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0bf8d36db1f056d06e54c3fd50f07624c1f31b7ffd5f7863a5f1f24090f9ccf", kill_on_drop: false }`
[INFO] [stdout] e0bf8d36db1f056d06e54c3fd50f07624c1f31b7ffd5f7863a5f1f24090f9ccf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 164f78131eacee410595eca891da951880413e15c040d5ee91f44c29e79cdab7
[INFO] running `Command { std: "docker" "start" "-a" "164f78131eacee410595eca891da951880413e15c040d5ee91f44c29e79cdab7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling fastfibo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `mpz_ptr` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub type mpz_ptr = *mut __mpz_struct;
[INFO] [stdout]    |          ^^^^^^^ help: convert the identifier to upper camel case: `MpzPtr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `mpz_srcptr` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type mpz_srcptr = *const __mpz_struct;
[INFO] [stdout]    |          ^^^^^^^^^^ help: convert the identifier to upper camel case: `MpzSrcptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gmpz_steal`
[INFO] [stdout]   --> src/main.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn gmpz_steal(val: &mpz_t) -> mpz_t {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `mpz_ptr` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub type mpz_ptr = *mut __mpz_struct;
[INFO] [stdout]    |          ^^^^^^^ help: convert the identifier to upper camel case: `MpzPtr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `mpz_srcptr` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub type mpz_srcptr = *const __mpz_struct;
[INFO] [stdout]    |          ^^^^^^^^^^ help: convert the identifier to upper camel case: `MpzSrcptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]  --> src/main.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/cac44d9528e3bbbdaa1537d187bd489ccc5de18c/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-29e5e596e889a0aa.rlib
[INFO] [stdout]   = note: second definition in the local crate (`fastfibo`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fastfibo` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "164f78131eacee410595eca891da951880413e15c040d5ee91f44c29e79cdab7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164f78131eacee410595eca891da951880413e15c040d5ee91f44c29e79cdab7", kill_on_drop: false }`
[INFO] [stdout] 164f78131eacee410595eca891da951880413e15c040d5ee91f44c29e79cdab7