[INFO] cloning repository https://github.com/HCO168/hco_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HCO168/hco_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a76934c4853dc48add4166b082b19802557bde7
[INFO] checking HCO168/hco_rust against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHCO168%2Fhco_rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HCO168/hco_rust
[INFO] finished tweaking git repo https://github.com/HCO168/hco_rust
[INFO] tweaked toml for git repo https://github.com/HCO168/hco_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HCO168/hco_rust on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/HCO168/hco_rust 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4633b8b14f045639c6858f2d7fbc9bc6660bae1fd4b069dc95158b4d290b2b8
[INFO] running `Command { std: "docker" "start" "-a" "a4633b8b14f045639c6858f2d7fbc9bc6660bae1fd4b069dc95158b4d290b2b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4633b8b14f045639c6858f2d7fbc9bc6660bae1fd4b069dc95158b4d290b2b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4633b8b14f045639c6858f2d7fbc9bc6660bae1fd4b069dc95158b4d290b2b8", kill_on_drop: false }`
[INFO] [stdout] a4633b8b14f045639c6858f2d7fbc9bc6660bae1fd4b069dc95158b4d290b2b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d967688627364294257335749e42e1d12727f33e7628ff13881653282379025d
[INFO] running `Command { std: "docker" "start" "-a" "d967688627364294257335749e42e1d12727f33e7628ff13881653282379025d", kill_on_drop: false }`
[INFO] [stderr]     Checking lib v0.0.2-beta (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/math/fraction.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process::Output;
[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: `gcd`
[INFO] [stdout]  --> src/math/fraction.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::math::num_theory::{gcd, gcd_euclid_iterative};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HasSign` and `Sign`
[INFO] [stdout]  --> src/math/fraction.rs:4:65
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::math::traits::additive::{Abs, AddId, HasPartialSign, HasSign, Sign};
[INFO] [stdout]   |                                                                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::datas::ord_wrap::Ordered`
[INFO] [stdout]  --> src/datas/interval_set.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::datas::ord_wrap::Ordered;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/datas/map.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/datas/bound_protect.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::debug_assert`
[INFO] [stdout]  --> src/ntr_lang/lang.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::debug_assert;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dprintln`
[INFO] [stdout]  --> src/ntr_lang/lang.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::dprintln;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Output`
[INFO] [stdout]  --> src/math/fraction.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process::Output;
[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: `gcd`
[INFO] [stdout]  --> src/math/fraction.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::math::num_theory::{gcd, gcd_euclid_iterative};
[INFO] [stdout]   |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HasSign` and `Sign`
[INFO] [stdout]  --> src/math/fraction.rs:4:65
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::math::traits::additive::{Abs, AddId, HasPartialSign, HasSign, Sign};
[INFO] [stdout]   |                                                                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/datas/map.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/datas/bound_protect.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::debug_assert`
[INFO] [stdout]  --> src/ntr_lang/lang.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::debug_assert;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::dprintln`
[INFO] [stdout]  --> src/ntr_lang/lang.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::dprintln;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/datas/map.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn all(&self) -> Vec<(&K, &V)> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 86 |         BTreeMap::all(self)
[INFO] [stdout]    |         ------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lib` (lib) due to 1 previous error; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/datas/map.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn all(&self) -> Vec<(&K, &V)> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 86 |         BTreeMap::all(self)
[INFO] [stdout]    |         ------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lib` (lib test) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d967688627364294257335749e42e1d12727f33e7628ff13881653282379025d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d967688627364294257335749e42e1d12727f33e7628ff13881653282379025d", kill_on_drop: false }`
[INFO] [stdout] d967688627364294257335749e42e1d12727f33e7628ff13881653282379025d
