[INFO] cloning repository https://github.com/ammkrn/nanoda
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ammkrn/nanoda" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammkrn%2Fnanoda", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammkrn%2Fnanoda'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09aa607e4a41b522a09b2fde11895e356fe52826
[INFO] testing ammkrn/nanoda against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammkrn%2Fnanoda" "/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/ammkrn/nanoda on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ammkrn/nanoda
[INFO] finished tweaking git repo https://github.com/ammkrn/nanoda
[INFO] tweaked toml for git repo https://github.com/ammkrn/nanoda written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ammkrn/nanoda already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimallocator v0.1.3
[INFO] [stderr]   Downloaded stacker v0.1.5
[INFO] [stderr]   Downloaded mimalloc-sys v0.1.5
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] b4dab9cd99bf808b5f7b6a85bff8d6be96957df151076e0260d2edd69b770bc0
[INFO] running `Command { std: "docker" "start" "-a" "b4dab9cd99bf808b5f7b6a85bff8d6be96957df151076e0260d2edd69b770bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4dab9cd99bf808b5f7b6a85bff8d6be96957df151076e0260d2edd69b770bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4dab9cd99bf808b5f7b6a85bff8d6be96957df151076e0260d2edd69b770bc0", kill_on_drop: false }`
[INFO] [stdout] b4dab9cd99bf808b5f7b6a85bff8d6be96957df151076e0260d2edd69b770bc0
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eda8b86a653fa5dc6c1243a5db9c33384c8d96f1a8d7c4171655e94f82dfd77b
[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" "eda8b86a653fa5dc6c1243a5db9c33384c8d96f1a8d7c4171655e94f82dfd77b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling mimalloc-sys v0.1.5
[INFO] [stderr]    Compiling stacker v0.1.5
[INFO] [stderr]    Compiling mimallocator v0.1.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling nanoda v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/expr.rs:573:13
[INFO] [stdout]     |
[INFO] [stdout] 573 |             std::mem::replace(self, instd);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/reduction.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |                     Some(already) => { std::mem::replace(already, e2); },
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/pretty/components.rs:222:21
[INFO] [stdout]     |
[INFO] [stdout] 222 |                     std::mem::replace(eol, (acc.len() + line_width));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.45s
[INFO] running `Command { std: "docker" "inspect" "eda8b86a653fa5dc6c1243a5db9c33384c8d96f1a8d7c4171655e94f82dfd77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eda8b86a653fa5dc6c1243a5db9c33384c8d96f1a8d7c4171655e94f82dfd77b", kill_on_drop: false }`
[INFO] [stdout] eda8b86a653fa5dc6c1243a5db9c33384c8d96f1a8d7c4171655e94f82dfd77b
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81c7d79e131c8778d80364bdde5d32368e7c1fa76e509873db6cd9154bd8f1a3
[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" "81c7d79e131c8778d80364bdde5d32368e7c1fa76e509873db6cd9154bd8f1a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling nanoda v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/expr.rs:573:13
[INFO] [stdout]     |
[INFO] [stdout] 573 |             std::mem::replace(self, instd);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/reduction.rs:128:40
[INFO] [stdout]     |
[INFO] [stdout] 128 |                     Some(already) => { std::mem::replace(already, e2); },
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/pretty/components.rs:222:21
[INFO] [stdout]     |
[INFO] [stdout] 222 |                     std::mem::replace(eol, (acc.len() + line_width));
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "81c7d79e131c8778d80364bdde5d32368e7c1fa76e509873db6cd9154bd8f1a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c7d79e131c8778d80364bdde5d32368e7c1fa76e509873db6cd9154bd8f1a3", kill_on_drop: false }`
[INFO] [stdout] 81c7d79e131c8778d80364bdde5d32368e7c1fa76e509873db6cd9154bd8f1a3
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d857506ff24b6cdfee491c4e995b664b17901770d5ad447ea3fa49f6b79db9d
[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" "4d857506ff24b6cdfee491c4e995b664b17901770d5ad447ea3fa49f6b79db9d", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/expr.rs:573:13
[INFO] [stderr]     |
[INFO] [stderr] 573 |             std::mem::replace(self, instd);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/reduction.rs:128:40
[INFO] [stderr]     |
[INFO] [stderr] 128 |                     Some(already) => { std::mem::replace(already, e2); },
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/pretty/components.rs:222:21
[INFO] [stderr]     |
[INFO] [stderr] 222 |                     std::mem::replace(eol, (acc.len() + line_width));
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nanoda-e1e830dc14ad50fa
[INFO] [stdout] 
[INFO] [stderr] mimalloc: process init: 0x7f0b3b9f3800
[INFO] [stdout] running 0 tests
[INFO] [stderr] mimalloc: debug level : 3
[INFO] [stdout] 
[INFO] [stderr] mimalloc: option 'pool_commit': 0
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] mimalloc: option 'page_reset': 0
[INFO] [stdout] 
[INFO] [stderr] mimalloc: option 'show_stats': 0
[INFO] [stderr] heap stats:     peak      total      freed       unit      count  
[INFO] [stderr]    elapsed:     0.001 s
[INFO] [stderr]    process: user: 0.003 s, system: 0.000 s, faults: 0, reclaims: 172, rss: 31.8 mb
[INFO] [stderr] mimalloc: process done: 0x7f0b3b9f3800
[INFO] running `Command { std: "docker" "inspect" "4d857506ff24b6cdfee491c4e995b664b17901770d5ad447ea3fa49f6b79db9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d857506ff24b6cdfee491c4e995b664b17901770d5ad447ea3fa49f6b79db9d", kill_on_drop: false }`
[INFO] [stdout] 4d857506ff24b6cdfee491c4e995b664b17901770d5ad447ea3fa49f6b79db9d