[INFO] cloning repository https://github.com/dotjpg3141/llvm-brainfuck
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dotjpg3141/llvm-brainfuck" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotjpg3141%2Fllvm-brainfuck", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotjpg3141%2Fllvm-brainfuck'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79e3509e30e3144389fa823a0c2ab47d6b9c200b
[INFO] checking dotjpg3141/llvm-brainfuck against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotjpg3141%2Fllvm-brainfuck" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dotjpg3141/llvm-brainfuck on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dotjpg3141/llvm-brainfuck
[INFO] finished tweaking git repo https://github.com/dotjpg3141/llvm-brainfuck
[INFO] tweaked toml for git repo https://github.com/dotjpg3141/llvm-brainfuck written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/dotjpg3141/llvm-brainfuck already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argparse v0.2.1
[INFO] [stderr]   Downloaded tempfile v2.2.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.32
[INFO] [stderr]   Downloaded libc v0.2.34
[INFO] [stderr]   Downloaded llvm-sys v38.0.6
[INFO] [stderr]   Downloaded semver v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3d61bb1cde2a9f9f9e943188286e5b1fd3c716e5ec0b5a5a1189d0bc7b74fb05
[INFO] running `Command { std: "docker" "start" "-a" "3d61bb1cde2a9f9f9e943188286e5b1fd3c716e5ec0b5a5a1189d0bc7b74fb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d61bb1cde2a9f9f9e943188286e5b1fd3c716e5ec0b5a5a1189d0bc7b74fb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d61bb1cde2a9f9f9e943188286e5b1fd3c716e5ec0b5a5a1189d0bc7b74fb05", kill_on_drop: false }`
[INFO] [stdout] 3d61bb1cde2a9f9f9e943188286e5b1fd3c716e5ec0b5a5a1189d0bc7b74fb05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a929223f034e9d8c61ae3949b2189171b5ede9017a5be9be9f6e2ffa1d5e6340
[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" "a929223f034e9d8c61ae3949b2189171b5ede9017a5be9be9f6e2ffa1d5e6340", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.34
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]     Checking argparse v0.2.1
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling semver-parser v0.6.2
[INFO] [stderr]    Compiling semver v0.4.1
[INFO] [stderr]    Compiling llvm-sys v38.0.6
[INFO] [stderr]     Checking llvm-brainfuck v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:271:20
[INFO] [stdout]     |
[INFO] [stdout] 271 |     let input: Box<io::Read> = if input_file_option == "" {
[INFO] [stdout]     |                    ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:284:75
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn create_output_writer(output_file_option: &String) -> io::BufWriter<Box<io::Write>> {
[INFO] [stdout]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let output: Box<io::Write> = if output_file_option == "" {
[INFO] [stdout]     |                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:182:26
[INFO] [stdout]     |
[INFO] [stdout] 182 |             let mut ee = mem::uninitialized();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:271:20
[INFO] [stdout]     |
[INFO] [stdout] 271 |     let input: Box<io::Read> = if input_file_option == "" {
[INFO] [stdout]     |                    ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:284:75
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn create_output_writer(output_file_option: &String) -> io::BufWriter<Box<io::Write>> {
[INFO] [stdout]     |                                                                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let output: Box<io::Write> = if output_file_option == "" {
[INFO] [stdout]     |                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:182:26
[INFO] [stdout]     |
[INFO] [stdout] 182 |             let mut ee = mem::uninitialized();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.41s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a929223f034e9d8c61ae3949b2189171b5ede9017a5be9be9f6e2ffa1d5e6340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a929223f034e9d8c61ae3949b2189171b5ede9017a5be9be9f6e2ffa1d5e6340", kill_on_drop: false }`
[INFO] [stdout] a929223f034e9d8c61ae3949b2189171b5ede9017a5be9be9f6e2ffa1d5e6340