[INFO] cloning repository https://github.com/rctcwyvrn/rust-fractran
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rctcwyvrn/rust-fractran" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Frust-fractran", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Frust-fractran'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17559b364a7766f4d825fbb256d86b3cd6879b1d
[INFO] checking rctcwyvrn/rust-fractran against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for 155501-infallible-never-no-reservation
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frctcwyvrn%2Frust-fractran" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/rctcwyvrn/rust-fractran
[INFO] finished tweaking git repo https://github.com/rctcwyvrn/rust-fractran
[INFO] tweaked toml for git repo https://github.com/rctcwyvrn/rust-fractran written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rctcwyvrn/rust-fractran on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rctcwyvrn/rust-fractran 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" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fe1dcf7b3dc612891de0ad8bab7350f27ac76e8d2c1d3f62f13ef8d6ef79456
[INFO] running `Command { std: "docker" "start" "-a" "6fe1dcf7b3dc612891de0ad8bab7350f27ac76e8d2c1d3f62f13ef8d6ef79456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fe1dcf7b3dc612891de0ad8bab7350f27ac76e8d2c1d3f62f13ef8d6ef79456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe1dcf7b3dc612891de0ad8bab7350f27ac76e8d2c1d3f62f13ef8d6ef79456", kill_on_drop: false }`
[INFO] [stdout] 6fe1dcf7b3dc612891de0ad8bab7350f27ac76e8d2c1d3f62f13ef8d6ef79456
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bb82352e1ec10907ca4d0022d68cf2fc2909cd348b916334b050010cf6afc08
[INFO] running `Command { std: "docker" "start" "-a" "2bb82352e1ec10907ca4d0022d68cf2fc2909cd348b916334b050010cf6afc08", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking primes v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking fractran-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `int_log` has been stable since 1.67.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_log)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `int_log` has been stable since 1.67.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_log)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::Pow`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num_traits::Pow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::Pow`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num_traits::Pow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_basic_engine` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn execute_basic_engine() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_register_engine` is never used
[INFO] [stdout]   --> src/main.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn execute_register_engine() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `primes` and `primes_optimized` are never used
[INFO] [stdout]   --> src/core.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Program {
[INFO] [stdout]    | ------------ associated functions in this implementation
[INFO] [stdout] 12 |     pub fn primes() -> Program {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn primes_optimized() -> Program {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FractranEngine` is never used
[INFO] [stdout]   --> src/core.rs:79:11
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub trait FractranEngine<Value>: IntoIterator<Item = Value>
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Basic` is never constructed
[INFO] [stdout]  --> src/engines/basic.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Basic {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/engines/basic.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Value {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `multiple` and `mult` are never used
[INFO] [stdout]   --> src/engines/basic.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Value {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 25 |     fn multiple(&self, denom: FracSize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn mult(&mut self, num: FracSize, denom: FracSize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BasicIter` is never constructed
[INFO] [stdout]   --> src/engines/basic.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct BasicIter {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/engines/basic.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl BasicIter {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 66 |     fn from(engine: Basic) -> BasicIter {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_basic_engine` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn execute_basic_engine() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_register_engine` is never used
[INFO] [stdout]   --> src/main.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn execute_register_engine() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `primes` and `primes_optimized` are never used
[INFO] [stdout]   --> src/core.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Program {
[INFO] [stdout]    | ------------ associated functions in this implementation
[INFO] [stdout] 12 |     pub fn primes() -> Program {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn primes_optimized() -> Program {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FractranEngine` is never used
[INFO] [stdout]   --> src/core.rs:79:11
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub trait FractranEngine<Value>: IntoIterator<Item = Value>
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Basic` is never constructed
[INFO] [stdout]  --> src/engines/basic.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Basic {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/engines/basic.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Value {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `multiple` and `mult` are never used
[INFO] [stdout]   --> src/engines/basic.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Value {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 25 |     fn multiple(&self, denom: FracSize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn mult(&mut self, num: FracSize, denom: FracSize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BasicIter` is never constructed
[INFO] [stdout]   --> src/engines/basic.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct BasicIter {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/engines/basic.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl BasicIter {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 66 |     fn from(engine: Basic) -> BasicIter {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "2bb82352e1ec10907ca4d0022d68cf2fc2909cd348b916334b050010cf6afc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb82352e1ec10907ca4d0022d68cf2fc2909cd348b916334b050010cf6afc08", kill_on_drop: false }`
[INFO] [stdout] 2bb82352e1ec10907ca4d0022d68cf2fc2909cd348b916334b050010cf6afc08
