[INFO] fetching crate witx-overview-docgen 0.1.2...
[INFO] testing witx-overview-docgen-0.1.2 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate witx-overview-docgen 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate witx-overview-docgen 0.1.2 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate witx-overview-docgen 0.1.2
[INFO] finished tweaking crates.io crate witx-overview-docgen 0.1.2
[INFO] tweaked toml for crates.io crate witx-overview-docgen 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate witx-overview-docgen 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7ac546fe58c0a0b255576f26fd9604988276c0da19ba1c81fd5d73f49a3920fe
[INFO] running `Command { std: "docker" "start" "-a" "7ac546fe58c0a0b255576f26fd9604988276c0da19ba1c81fd5d73f49a3920fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ac546fe58c0a0b255576f26fd9604988276c0da19ba1c81fd5d73f49a3920fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac546fe58c0a0b255576f26fd9604988276c0da19ba1c81fd5d73f49a3920fe", kill_on_drop: false }`
[INFO] [stdout] 7ac546fe58c0a0b255576f26fd9604988276c0da19ba1c81fd5d73f49a3920fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 930be81018e973cff599f4e6753846b8dfdf0fbd44db426c0f8e828e32210e40
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "930be81018e973cff599f4e6753846b8dfdf0fbd44db426c0f8e828e32210e40", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling wast v22.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling witx v0.8.7
[INFO] [stderr]    Compiling witx-overview-docgen v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/generator.rs:293:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |           return Ok(());
[INFO] [stdout]     |           ------------- any code following this expression is unreachable
[INFO] [stdout] 293 | /         if docs.is_empty() {
[INFO] [stdout] 294 | |             return Ok(());
[INFO] [stdout] 295 | |         }
[INFO] [stdout]     | |_________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `as_type`
[INFO] [stdout]    --> src/generator.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         as_type: &ASType,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_type`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module_name`
[INFO] [stdout]    --> src/generator.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let module_name = match self.module_name.as_ref() {
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_module_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]    --> src/generator.rs:291:29
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `docs`
[INFO] [stdout]    --> src/generator.rs:291:54
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stdout]     |                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_nullable`
[INFO] [stdout]   --> src/astype.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn is_nullable(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `continuation_bytes`
[INFO] [stdout]   --> src/pretty_writer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     continuation_bytes: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `continuation`
[INFO] [stdout]    --> src/pretty_writer.rs:106:12
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn continuation(&mut self) -> Result<&mut Self, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.40s
[INFO] running `Command { std: "docker" "inspect" "930be81018e973cff599f4e6753846b8dfdf0fbd44db426c0f8e828e32210e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930be81018e973cff599f4e6753846b8dfdf0fbd44db426c0f8e828e32210e40", kill_on_drop: false }`
[INFO] [stdout] 930be81018e973cff599f4e6753846b8dfdf0fbd44db426c0f8e828e32210e40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85184c4e49af5ab91b56bb91fba2ac8338cdac49031c0b75696c22c3d063d8b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "85184c4e49af5ab91b56bb91fba2ac8338cdac49031c0b75696c22c3d063d8b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling witx-overview-docgen v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/generator.rs:293:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |           return Ok(());
[INFO] [stdout]     |           ------------- any code following this expression is unreachable
[INFO] [stdout] 293 | /         if docs.is_empty() {
[INFO] [stdout] 294 | |             return Ok(());
[INFO] [stdout] 295 | |         }
[INFO] [stdout]     | |_________^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `as_type`
[INFO] [stdout]    --> src/generator.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         as_type: &ASType,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_type`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module_name`
[INFO] [stdout]    --> src/generator.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let module_name = match self.module_name.as_ref() {
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_module_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]    --> src/generator.rs:291:29
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stdout]     |                             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `docs`
[INFO] [stdout]    --> src/generator.rs:291:54
[INFO] [stdout]     |
[INFO] [stdout] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stdout]     |                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_nullable`
[INFO] [stdout]   --> src/astype.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn is_nullable(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `continuation_bytes`
[INFO] [stdout]   --> src/pretty_writer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     continuation_bytes: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `continuation`
[INFO] [stdout]    --> src/pretty_writer.rs:106:12
[INFO] [stdout]     |
[INFO] [stdout] 106 |     pub fn continuation(&mut self) -> Result<&mut Self, Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "85184c4e49af5ab91b56bb91fba2ac8338cdac49031c0b75696c22c3d063d8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85184c4e49af5ab91b56bb91fba2ac8338cdac49031c0b75696c22c3d063d8b7", kill_on_drop: false }`
[INFO] [stdout] 85184c4e49af5ab91b56bb91fba2ac8338cdac49031c0b75696c22c3d063d8b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1cd10fcc554db599689121c8619fe74dee51630e5ed0c503731a700f1144971c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1cd10fcc554db599689121c8619fe74dee51630e5ed0c503731a700f1144971c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/generator.rs:293:9
[INFO] [stderr]     |
[INFO] [stderr] 292 |           return Ok(());
[INFO] [stderr]     |           ------------- any code following this expression is unreachable
[INFO] [stderr] 293 | /         if docs.is_empty() {
[INFO] [stderr] 294 | |             return Ok(());
[INFO] [stderr] 295 | |         }
[INFO] [stderr]     | |_________^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `as_type`
[INFO] [stderr]    --> src/generator.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         as_type: &ASType,
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_type`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `module_name`
[INFO] [stderr]    --> src/generator.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |         let module_name = match self.module_name.as_ref() {
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_module_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w`
[INFO] [stderr]    --> src/generator.rs:291:29
[INFO] [stderr]     |
[INFO] [stderr] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stderr]     |                             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `docs`
[INFO] [stderr]    --> src/generator.rs:291:54
[INFO] [stderr]     |
[INFO] [stderr] 291 |     fn write_docs<T: Write>(w: &mut PrettyWriter<T>, docs: &str) -> Result<(), Error> {
[INFO] [stderr]     |                                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_docs`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_nullable`
[INFO] [stderr]   --> src/astype.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn is_nullable(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `continuation_bytes`
[INFO] [stderr]   --> src/pretty_writer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     continuation_bytes: &'static str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `continuation`
[INFO] [stderr]    --> src/pretty_writer.rs:106:12
[INFO] [stderr]     |
[INFO] [stderr] 106 |     pub fn continuation(&mut self) -> Result<&mut Self, Error> {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `witx-overview-docgen` (bin "witx-overview-docgen" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/witx_overview_docgen-ec0aa87bf7f69659)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cd10fcc554db599689121c8619fe74dee51630e5ed0c503731a700f1144971c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cd10fcc554db599689121c8619fe74dee51630e5ed0c503731a700f1144971c", kill_on_drop: false }`
[INFO] [stdout] 1cd10fcc554db599689121c8619fe74dee51630e5ed0c503731a700f1144971c