[INFO] cloning repository https://github.com/Lukasz825700516/mcfrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lukasz825700516/mcfrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11bc09899c845cf3dd709ace32b2173b0255d0dc
[INFO] checking Lukasz825700516/mcfrs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs" "/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/Lukasz825700516/mcfrs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lukasz825700516/mcfrs
[INFO] finished tweaking git repo https://github.com/Lukasz825700516/mcfrs
[INFO] tweaked toml for git repo https://github.com/Lukasz825700516/mcfrs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Lukasz825700516/mcfrs 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86e432dbf1ec94a7b36bf83e9153b4891452c090714df7aa79f5164586112c05
[INFO] running `Command { std: "docker" "start" "-a" "86e432dbf1ec94a7b36bf83e9153b4891452c090714df7aa79f5164586112c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86e432dbf1ec94a7b36bf83e9153b4891452c090714df7aa79f5164586112c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e432dbf1ec94a7b36bf83e9153b4891452c090714df7aa79f5164586112c05", kill_on_drop: false }`
[INFO] [stdout] 86e432dbf1ec94a7b36bf83e9153b4891452c090714df7aa79f5164586112c05
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0248411d6456218fbd944e121677a1489c94484556fd6ffa43bb3c4593f7d7de
[INFO] running `Command { std: "docker" "start" "-a" "0248411d6456218fbd944e121677a1489c94484556fd6ffa43bb3c4593f7d7de", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking mcfrs1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `burn` is never used
[INFO] [stdout]  --> src/mcfrs/compiler/scope_burner.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator<Item = Scope<'a>> {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 6 |     fn burn(self) -> Result<(), std::io::Error>;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MacroDefinition<'a> {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 9 |     namespace: &'a Namespace<'a>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_reference_id` is never used
[INFO] [stdout]   --> src/mcfrs/scope.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> Scope<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn set_reference_id(&mut self, id: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `burn` is never used
[INFO] [stdout]  --> src/mcfrs/compiler/scope_burner.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator<Item = Scope<'a>> {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 6 |     fn burn(self) -> Result<(), std::io::Error>;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MacroDefinition<'a> {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 9 |     namespace: &'a Namespace<'a>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_reference_id` is never used
[INFO] [stdout]   --> src/mcfrs/scope.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> Scope<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn set_reference_id(&mut self, id: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.09s
[INFO] running `Command { std: "docker" "inspect" "0248411d6456218fbd944e121677a1489c94484556fd6ffa43bb3c4593f7d7de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0248411d6456218fbd944e121677a1489c94484556fd6ffa43bb3c4593f7d7de", kill_on_drop: false }`
[INFO] [stdout] 0248411d6456218fbd944e121677a1489c94484556fd6ffa43bb3c4593f7d7de