[INFO] cloning repository https://github.com/dawidl022/while-analyser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dawidl022/while-analyser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdawidl022%2Fwhile-analyser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdawidl022%2Fwhile-analyser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8bbe697deedf8f395b6b533a9ca9bde8ee381461
[INFO] checking dawidl022/while-analyser against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdawidl022%2Fwhile-analyser" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dawidl022/while-analyser
[INFO] finished tweaking git repo https://github.com/dawidl022/while-analyser
[INFO] tweaked toml for git repo https://github.com/dawidl022/while-analyser written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dawidl022/while-analyser on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dawidl022/while-analyser 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking dawidl022/while-analyser against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdawidl022%2Fwhile-analyser" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dawidl022/while-analyser
[INFO] finished tweaking git repo https://github.com/dawidl022/while-analyser
[INFO] tweaked toml for git repo https://github.com/dawidl022/while-analyser written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dawidl022/while-analyser on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dawidl022/while-analyser 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f293f37866287184847af11d333d8b317aa2c1a057e6cd865bdff6e813ec493f
[INFO] running `Command { std: "docker" "start" "-a" "f293f37866287184847af11d333d8b317aa2c1a057e6cd865bdff6e813ec493f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f293f37866287184847af11d333d8b317aa2c1a057e6cd865bdff6e813ec493f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f293f37866287184847af11d333d8b317aa2c1a057e6cd865bdff6e813ec493f", kill_on_drop: false }`
[INFO] [stdout] f293f37866287184847af11d333d8b317aa2c1a057e6cd865bdff6e813ec493f
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f50f3ba87e13790df5497631a61a745c26a3499cb4dee6e79515cb68d88304cc
[INFO] running `Command { std: "docker" "start" "-a" "f50f3ba87e13790df5497631a61a745c26a3499cb4dee6e79515cb68d88304cc", kill_on_drop: false }`
[INFO] [stderr]     Checking while-analyser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Lab` is never used
[INFO] [stdout]  --> src/analysis.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Lab = u32;
[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 `init` is never used
[INFO] [stdout]  --> src/analysis.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn init(stmt: &ast::LabStmt) -> Lab {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `final` is never used
[INFO] [stdout]   --> src/analysis.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn r#final(stmt: &ast::LabStmt) -> Set<Lab> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blocks` is never used
[INFO] [stdout]   --> src/analysis.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn blocks(stmt: &ast::LabStmt) -> Set<Block> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flow` is never used
[INFO] [stdout]   --> src/analysis.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn flow(stmt: &ast::LabStmt) -> Set<(Lab, Lab)> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `labels` is never used
[INFO] [stdout]   --> src/analysis.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn r#labels(stmt: &ast::LabStmt) -> Set<Lab> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Block` is never used
[INFO] [stdout]   --> src/analysis.rs:70:6
[INFO] [stdout]    |
[INFO] [stdout] 70 | enum Block {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Set` is never constructed
[INFO] [stdout]   --> src/analysis.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct Set<T: PartialEq>(Vec<T>);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `singleton`, `union`, and `empty` are never used
[INFO] [stdout]   --> src/analysis.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | impl<T: PartialEq> Set<T> {
[INFO] [stdout]    | ------------------------- associated functions in this implementation
[INFO] [stdout] 79 |     fn singleton(item: T) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn r#union<const N: usize>(sets: [Self; N]) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     fn empty() -> Set<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `label` is never used
[INFO] [stdout]    --> src/analysis.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl Block {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] 136 |     fn label(&self) -> Lab {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse(input: &str) -> Result<ast::Stmt, ParseError> {
[INFO] [stdout]    |                     ^^^^                       ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse(input: &str) -> Result<ast::Stmt, ParseError<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Lab` is never used
[INFO] [stdout]  --> src/analysis.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Lab = u32;
[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 `init` is never used
[INFO] [stdout]  --> src/analysis.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn init(stmt: &ast::LabStmt) -> Lab {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `final` is never used
[INFO] [stdout]   --> src/analysis.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn r#final(stmt: &ast::LabStmt) -> Set<Lab> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `blocks` is never used
[INFO] [stdout]   --> src/analysis.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn blocks(stmt: &ast::LabStmt) -> Set<Block> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flow` is never used
[INFO] [stdout]   --> src/analysis.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn flow(stmt: &ast::LabStmt) -> Set<(Lab, Lab)> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `labels` is never used
[INFO] [stdout]   --> src/analysis.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn r#labels(stmt: &ast::LabStmt) -> Set<Lab> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Block` is never used
[INFO] [stdout]   --> src/analysis.rs:70:6
[INFO] [stdout]    |
[INFO] [stdout] 70 | enum Block {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Set` is never constructed
[INFO] [stdout]   --> src/analysis.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | struct Set<T: PartialEq>(Vec<T>);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `singleton`, `union`, and `empty` are never used
[INFO] [stdout]   --> src/analysis.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | impl<T: PartialEq> Set<T> {
[INFO] [stdout]    | ------------------------- associated functions in this implementation
[INFO] [stdout] 79 |     fn singleton(item: T) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn r#union<const N: usize>(sets: [Self; N]) -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     fn empty() -> Set<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `label` is never used
[INFO] [stdout]    --> src/analysis.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl Block {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] 136 |     fn label(&self) -> Lab {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parser.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse(input: &str) -> Result<ast::Stmt, ParseError> {
[INFO] [stdout]    |                     ^^^^                       ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse(input: &str) -> Result<ast::Stmt, ParseError<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "f50f3ba87e13790df5497631a61a745c26a3499cb4dee6e79515cb68d88304cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f50f3ba87e13790df5497631a61a745c26a3499cb4dee6e79515cb68d88304cc", kill_on_drop: false }`
[INFO] [stdout] f50f3ba87e13790df5497631a61a745c26a3499cb4dee6e79515cb68d88304cc
