[INFO] cloning repository https://github.com/FireTner/hlp_bf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FireTner/hlp_bf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFireTner%2Fhlp_bf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFireTner%2Fhlp_bf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d3c425b3f98734c8099358b1e3ccbed0d2fabd5
[INFO] building FireTner/hlp_bf against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFireTner%2Fhlp_bf" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FireTner/hlp_bf on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FireTner/hlp_bf
[INFO] finished tweaking git repo https://github.com/FireTner/hlp_bf
[INFO] tweaked toml for git repo https://github.com/FireTner/hlp_bf written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FireTner/hlp_bf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a59f382492761ad3d16d40dd38c212c819c5e16deb811b7781ef0f7bd6d2308
[INFO] running `Command { std: "docker" "start" "-a" "4a59f382492761ad3d16d40dd38c212c819c5e16deb811b7781ef0f7bd6d2308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a59f382492761ad3d16d40dd38c212c819c5e16deb811b7781ef0f7bd6d2308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a59f382492761ad3d16d40dd38c212c819c5e16deb811b7781ef0f7bd6d2308", kill_on_drop: false }`
[INFO] [stdout] 4a59f382492761ad3d16d40dd38c212c819c5e16deb811b7781ef0f7bd6d2308
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77e2d3fb2528bcc9e71b6a36a618acbda7f6806f95d3aa91dbaca5dfd6bd86a5
[INFO] running `Command { std: "docker" "start" "-a" "77e2d3fb2528bcc9e71b6a36a618acbda7f6806f95d3aa91dbaca5dfd6bd86a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling hlp_bf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::result;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `layer::apply`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use layer::apply;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     loop {
[INFO] [stdout] 25 | |         m += 1;
[INFO] [stdout] 26 | |
[INFO] [stdout] 27 | |         for i in 0..result.len() {
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |       return vec![];
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lut`
[INFO] [stdout]   --> src/lut.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn gen_pairs(lut: &Vec<[u8; 16]>, states: usize) -> Vec<Vec<(u8, [u8; 16])>> {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_lut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `states`
[INFO] [stdout]   --> src/lut.rs:30:39
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn gen_pairs(lut: &Vec<[u8; 16]>, states: usize) -> Vec<Vec<(u8, [u8; 16])>> {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `apply` is never used
[INFO] [stdout]   --> src/layer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn apply(lut: Vec<[u8; 16]>, input: [u8; 16], index: usize) -> [u8; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "77e2d3fb2528bcc9e71b6a36a618acbda7f6806f95d3aa91dbaca5dfd6bd86a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77e2d3fb2528bcc9e71b6a36a618acbda7f6806f95d3aa91dbaca5dfd6bd86a5", kill_on_drop: false }`
[INFO] [stdout] 77e2d3fb2528bcc9e71b6a36a618acbda7f6806f95d3aa91dbaca5dfd6bd86a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28a6e8bef17cd5f747eb208f3cb349cce3f4ec0834bd4ce781a0d24bca8b829a
[INFO] running `Command { std: "docker" "start" "-a" "28a6e8bef17cd5f747eb208f3cb349cce3f4ec0834bd4ce781a0d24bca8b829a", kill_on_drop: false }`
[INFO] [stderr]    Compiling hlp_bf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::result`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::result;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `layer::apply`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use layer::apply;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     loop {
[INFO] [stdout] 25 | |         m += 1;
[INFO] [stdout] 26 | |
[INFO] [stdout] 27 | |         for i in 0..result.len() {
[INFO] [stdout] ...  |
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |       return vec![];
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lut`
[INFO] [stdout]   --> src/lut.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn gen_pairs(lut: &Vec<[u8; 16]>, states: usize) -> Vec<Vec<(u8, [u8; 16])>> {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_lut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `states`
[INFO] [stdout]   --> src/lut.rs:30:39
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn gen_pairs(lut: &Vec<[u8; 16]>, states: usize) -> Vec<Vec<(u8, [u8; 16])>> {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_states`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `apply` is never used
[INFO] [stdout]   --> src/layer.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn apply(lut: Vec<[u8; 16]>, input: [u8; 16], index: usize) -> [u8; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "28a6e8bef17cd5f747eb208f3cb349cce3f4ec0834bd4ce781a0d24bca8b829a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28a6e8bef17cd5f747eb208f3cb349cce3f4ec0834bd4ce781a0d24bca8b829a", kill_on_drop: false }`
[INFO] [stdout] 28a6e8bef17cd5f747eb208f3cb349cce3f4ec0834bd4ce781a0d24bca8b829a