[INFO] cloning repository https://github.com/P1start/753
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/P1start/753" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FP1start%2F753", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FP1start%2F753'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8665b11724bba0bed27fdabecefe850480d4f85
[INFO] testing P1start/753 against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FP1start%2F753" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/P1start/753 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/P1start/753
[INFO] finished tweaking git repo https://github.com/P1start/753
[INFO] tweaked toml for git repo https://github.com/P1start/753 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/P1start/753 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.2
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.2
[INFO] [stderr]   Downloaded rand v0.4.1
[INFO] [stderr]   Downloaded llvm-sys v40.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4ef1b5787cdc5e3bdfc0a0891dd4b0ee0d47708c1a9386ef12aa1cdf083f920
[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" "d4ef1b5787cdc5e3bdfc0a0891dd4b0ee0d47708c1a9386ef12aa1cdf083f920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4ef1b5787cdc5e3bdfc0a0891dd4b0ee0d47708c1a9386ef12aa1cdf083f920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ef1b5787cdc5e3bdfc0a0891dd4b0ee0d47708c1a9386ef12aa1cdf083f920", kill_on_drop: false }`
[INFO] [stdout] d4ef1b5787cdc5e3bdfc0a0891dd4b0ee0d47708c1a9386ef12aa1cdf083f920
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", 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] 3717d40bfb935ac0cd20e714efdc52c28bf3f1ac3b85fb196101318bd2c0e6a2
[INFO] running `Command { std: "docker" "start" "-a" "3717d40bfb935ac0cd20e714efdc52c28bf3f1ac3b85fb196101318bd2c0e6a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling rand v0.4.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling regex v0.2.3
[INFO] [stderr]    Compiling llvm-sys v40.0.5
[INFO] [stderr]    Compiling _753 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/llvm.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |             try!(write!(f, "{}", c_str.to_str().unwrap()));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:138:31
[INFO] [stdout]     |
[INFO] [stdout] 138 |             let mut ee = mem::uninitialized();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:304:39
[INFO] [stdout]     |
[INFO] [stdout] 304 |             let mut out_module = mem::uninitialized();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compile.rs:321:25
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     let mut new_mir = MirBuilder::new(new_name, expr);
[INFO] [stdout]     |                         ----^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compile.rs:408:21
[INFO] [stdout]     |
[INFO] [stdout] 408 |                 let mut predecessors = mir.bbs.iter().enumerate().filter_map(|(i, x)| match x.terminator {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.63s
[INFO] running `Command { std: "docker" "inspect" "3717d40bfb935ac0cd20e714efdc52c28bf3f1ac3b85fb196101318bd2c0e6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3717d40bfb935ac0cd20e714efdc52c28bf3f1ac3b85fb196101318bd2c0e6a2", kill_on_drop: false }`
[INFO] [stdout] 3717d40bfb935ac0cd20e714efdc52c28bf3f1ac3b85fb196101318bd2c0e6a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5544a0632ea9517ea919afea1c06e4fe94ba4234e369421ea337ef6e56c3a73
[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" "b5544a0632ea9517ea919afea1c06e4fe94ba4234e369421ea337ef6e56c3a73", kill_on_drop: false }`
[INFO] [stderr]    Compiling _753 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/parse.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stdout]     |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/llvm.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |             try!(write!(f, "{}", c_str.to_str().unwrap()));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:138:31
[INFO] [stdout]     |
[INFO] [stdout] 138 |             let mut ee = mem::uninitialized();
[INFO] [stdout]     |                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/llvm.rs:304:39
[INFO] [stdout]     |
[INFO] [stdout] 304 |             let mut out_module = mem::uninitialized();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compile.rs:321:25
[INFO] [stdout]     |
[INFO] [stdout] 321 |                     let mut new_mir = MirBuilder::new(new_name, expr);
[INFO] [stdout]     |                         ----^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compile.rs:408:21
[INFO] [stdout]     |
[INFO] [stdout] 408 |                 let mut predecessors = mir.bbs.iter().enumerate().filter_map(|(i, x)| match x.terminator {
[INFO] [stdout]     |                     ----^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.89s
[INFO] running `Command { std: "docker" "inspect" "b5544a0632ea9517ea919afea1c06e4fe94ba4234e369421ea337ef6e56c3a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5544a0632ea9517ea919afea1c06e4fe94ba4234e369421ea337ef6e56c3a73", kill_on_drop: false }`
[INFO] [stdout] b5544a0632ea9517ea919afea1c06e4fe94ba4234e369421ea337ef6e56c3a73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", 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] c350fe78d44b46108556c38829d574e67673500931cd115ebcc365b994a3b692
[INFO] running `Command { std: "docker" "start" "-a" "c350fe78d44b46108556c38829d574e67673500931cd115ebcc365b994a3b692", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parse.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parse.rs:136:31
[INFO] [stderr]     |
[INFO] [stderr] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stderr]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/parse.rs:136:45
[INFO] [stderr]     |
[INFO] [stderr] 136 |             '0' ... '9' | 'a' ... 'z' | 'A' ... 'Z' | '-' | '_' => true,
[INFO] [stderr]     |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/llvm.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |             try!(write!(f, "{}", c_str.to_str().unwrap()));
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/llvm.rs:138:31
[INFO] [stderr]     |
[INFO] [stderr] 138 |             let mut ee = mem::uninitialized();
[INFO] [stderr]     |                               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/llvm.rs:304:39
[INFO] [stderr]     |
[INFO] [stderr] 304 |             let mut out_module = mem::uninitialized();
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/compile.rs:321:25
[INFO] [stderr]     |
[INFO] [stderr] 321 |                     let mut new_mir = MirBuilder::new(new_name, expr);
[INFO] [stderr]     |                         ----^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/compile.rs:408:21
[INFO] [stderr]     |
[INFO] [stderr] 408 |                 let mut predecessors = mir.bbs.iter().enumerate().filter_map(|(i, x)| match x.terminator {
[INFO] [stderr]     |                     ----^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `_753` (bin "_753" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/_753-1fc2defe4c5188b8)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test parse::test::test_parser_matching_parentheses ... ok
[INFO] [stdout] test parse::test::test_unmatched_brackets1 ... ok
[INFO] [stdout] test parse::test::test_parser_matching_square_brackets ... ok
[INFO] [stdout] test parse::test::test_unmatched_brackets2 ... ok
[INFO] [stderr] error: test failed, to rerun pass '--bin _753'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/_753-1fc2defe4c5188b8` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "c350fe78d44b46108556c38829d574e67673500931cd115ebcc365b994a3b692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c350fe78d44b46108556c38829d574e67673500931cd115ebcc365b994a3b692", kill_on_drop: false }`
[INFO] [stdout] c350fe78d44b46108556c38829d574e67673500931cd115ebcc365b994a3b692
