[INFO] cloning repository https://github.com/imlyzh/min_impls
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imlyzh/min_impls" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimlyzh%2Fmin_impls", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimlyzh%2Fmin_impls'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d39e6f05d721760e566c369b2e513a642d2232a7
[INFO] checking imlyzh/min_impls against master#96df4943409564a187894018f15f795426dc2e1f for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimlyzh%2Fmin_impls" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imlyzh/min_impls on toolchain 96df4943409564a187894018f15f795426dc2e1f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+96df4943409564a187894018f15f795426dc2e1f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imlyzh/min_impls
[INFO] finished tweaking git repo https://github.com/imlyzh/min_impls
[INFO] tweaked toml for git repo https://github.com/imlyzh/min_impls written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/imlyzh/min_impls 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" "+96df4943409564a187894018f15f795426dc2e1f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking imlyzh/min_impls against try#7e4f74fb8736fea8f455bb6e094122965ae8f4cd for pr-118968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimlyzh%2Fmin_impls" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imlyzh/min_impls on toolchain 7e4f74fb8736fea8f455bb6e094122965ae8f4cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imlyzh/min_impls
[INFO] finished tweaking git repo https://github.com/imlyzh/min_impls
[INFO] tweaked toml for git repo https://github.com/imlyzh/min_impls written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/imlyzh/min_impls 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" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6845d6ebb0b6c7bb384bf3e3e9d522cb931cfc84e6038980c09f6af8549e09dd
[INFO] running `Command { std: "docker" "start" "-a" "6845d6ebb0b6c7bb384bf3e3e9d522cb931cfc84e6038980c09f6af8549e09dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6845d6ebb0b6c7bb384bf3e3e9d522cb931cfc84e6038980c09f6af8549e09dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6845d6ebb0b6c7bb384bf3e3e9d522cb931cfc84e6038980c09f6af8549e09dd", kill_on_drop: false }`
[INFO] [stdout] 6845d6ebb0b6c7bb384bf3e3e9d522cb931cfc84e6038980c09f6af8549e09dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7e4f74fb8736fea8f455bb6e094122965ae8f4cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b772ceb58a4369aa8788bffdda5b370d4f2707b7445c9c1b90d30fb18f0bb9c7
[INFO] running `Command { std: "docker" "start" "-a" "b772ceb58a4369aa8788bffdda5b370d4f2707b7445c9c1b90d30fb18f0bb9c7", kill_on_drop: false }`
[INFO] [stderr]     Checking min_impls v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 _ => (),
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 _ => (),
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FunDef` is never constructed
[INFO] [stdout]  --> src/ir.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct FunDef {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_bb` is never used
[INFO] [stdout]   --> src/ir.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl FunDef {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 12 |     pub fn get_bb(&self, name: &str) -> Option<&BasicBlock> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_next` is never used
[INFO] [stdout]   --> src/ir.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl BasicBlock {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 31 |     pub fn get_next(&self) -> Option<Vec<&String>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Add` is never constructed
[INFO] [stdout]   --> src/ir.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum Inst {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 43 |     // Alloca(String),
[INFO] [stdout] 44 |     Add(String, String, String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inst` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FunDef` is never constructed
[INFO] [stdout]  --> src/ir.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct FunDef {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Goto`, `If`, and `Return` are never constructed
[INFO] [stdout]   --> src/ir.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum Terminator {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 49 |     Goto(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 50 |     If(String, String, String),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 51 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminator` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_bb` is never used
[INFO] [stdout]   --> src/ir.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl FunDef {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 12 |     pub fn get_bb(&self, name: &str) -> Option<&BasicBlock> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_all_veriable` is never used
[INFO] [stdout]  --> src/analysis/def_use_analysis.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_all_veriable(fun_def: &FunDef) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_next` is never used
[INFO] [stdout]   --> src/ir.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl BasicBlock {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 31 |     pub fn get_next(&self) -> Option<Vec<&String>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fun_ana` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn fun_ana(fun_def: &FunDef) -> HashMap<Option<String>, HashMap<String, bool>> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_pass` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn one_pass(fun_def: &FunDef, mut inp: HashMap<Option<String>, HashMap<String, bool>>) -> HashMap<Option<String>, HashMap<String, bool>> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basicblock_ana` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn basicblock_ana(bb: &BasicBlock, mut inp: HashMap<String, bool>) -> HashMap<String, bool> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Add` is never constructed
[INFO] [stdout]   --> src/ir.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum Inst {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 43 |     // Alloca(String),
[INFO] [stdout] 44 |     Add(String, String, String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Inst` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Goto`, `If`, and `Return` are never constructed
[INFO] [stdout]   --> src/ir.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum Terminator {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 49 |     Goto(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 50 |     If(String, String, String),
[INFO] [stdout]    |     ^^
[INFO] [stdout] 51 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Terminator` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_all_veriable` is never used
[INFO] [stdout]  --> src/analysis/def_use_analysis.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_all_veriable(fun_def: &FunDef) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fun_ana` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn fun_ana(fun_def: &FunDef) -> HashMap<Option<String>, HashMap<String, bool>> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_pass` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn one_pass(fun_def: &FunDef, mut inp: HashMap<Option<String>, HashMap<String, bool>>) -> HashMap<Option<String>, HashMap<String, bool>> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basicblock_ana` is never used
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn basicblock_ana(bb: &BasicBlock, mut inp: HashMap<String, bool>) -> HashMap<String, bool> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:50:49
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     next_set.push_back(Some(next.clone().clone()));
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]   --> src/analysis/def_use_analysis.rs:50:49
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     next_set.push_back(Some(next.clone().clone()));
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "b772ceb58a4369aa8788bffdda5b370d4f2707b7445c9c1b90d30fb18f0bb9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b772ceb58a4369aa8788bffdda5b370d4f2707b7445c9c1b90d30fb18f0bb9c7", kill_on_drop: false }`
[INFO] [stdout] b772ceb58a4369aa8788bffdda5b370d4f2707b7445c9c1b90d30fb18f0bb9c7