[INFO] fetching crate prometheus-exposition-format-rs 0.1.2...
[INFO] building prometheus-exposition-format-rs-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate prometheus-exposition-format-rs 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate prometheus-exposition-format-rs 0.1.2
[INFO] finished tweaking crates.io crate prometheus-exposition-format-rs 0.1.2
[INFO] tweaked toml for crates.io crate prometheus-exposition-format-rs 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus-exposition-format-rs 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding nom v5.1.3 (available: v8.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded arrayvec v0.5.2
[INFO] [stderr]   Downloaded nom v5.1.3
[INFO] [stderr]   Downloaded lexical-core v0.7.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02394563616f2f74378579b024940bee1137edf5bf13a7c7b0d77f0b82902a35
[INFO] running `Command { std: "docker" "start" "-a" "02394563616f2f74378579b024940bee1137edf5bf13a7c7b0d77f0b82902a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02394563616f2f74378579b024940bee1137edf5bf13a7c7b0d77f0b82902a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02394563616f2f74378579b024940bee1137edf5bf13a7c7b0d77f0b82902a35", kill_on_drop: false }`
[INFO] [stdout] 02394563616f2f74378579b024940bee1137edf5bf13a7c7b0d77f0b82902a35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e548183d0aeeb287c969f94787c81ddedb2912f28ef9c8b36119a2f96885f68
[INFO] running `Command { std: "docker" "start" "-a" "7e548183d0aeeb287c969f94787c81ddedb2912f28ef9c8b36119a2f96885f68", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling prometheus-exposition-format-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Err(String);
[INFO] [stdout]    |            --- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Err` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn parse_line(input: &str) -> IResult<&str, LineType> {
[INFO] [stdout]    |                      ^^^^             ^^^^  ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |                |
[INFO] [stdout]    |                      |                the same lifetime is elided here
[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] 23 | fn parse_line(input: &str) -> IResult<&str, LineType<'_>> {
[INFO] [stdout]    |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/comment.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType> {
[INFO] [stdout]    |                          ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |                |
[INFO] [stdout]    |                          |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType<'_>> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/samples.rs:94:24
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry> {
[INFO] [stdout]    |                        ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |                |
[INFO] [stdout]    |                        |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "7e548183d0aeeb287c969f94787c81ddedb2912f28ef9c8b36119a2f96885f68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e548183d0aeeb287c969f94787c81ddedb2912f28ef9c8b36119a2f96885f68", kill_on_drop: false }`
[INFO] [stdout] 7e548183d0aeeb287c969f94787c81ddedb2912f28ef9c8b36119a2f96885f68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 011e156224c9f4d0ab714c0e8d56ebdf69b1da6fec2c0b733b43cb30ff906751
[INFO] running `Command { std: "docker" "start" "-a" "011e156224c9f4d0ab714c0e8d56ebdf69b1da6fec2c0b733b43cb30ff906751", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Err(String);
[INFO] [stdout]    |            --- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Err` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn parse_line(input: &str) -> IResult<&str, LineType> {
[INFO] [stdout]    |                      ^^^^             ^^^^  ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |                |
[INFO] [stdout]    |                      |                the same lifetime is elided here
[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] 23 | fn parse_line(input: &str) -> IResult<&str, LineType<'_>> {
[INFO] [stdout]    |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/comment.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType> {
[INFO] [stdout]    |                          ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |                |
[INFO] [stdout]    |                          |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType<'_>> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/samples.rs:94:24
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry> {
[INFO] [stdout]    |                        ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |                |
[INFO] [stdout]    |                        |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling prometheus-exposition-format-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Err(String);
[INFO] [stdout]    |            --- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Err` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn parse_line(input: &str) -> IResult<&str, LineType> {
[INFO] [stdout]    |                      ^^^^             ^^^^  ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |                |
[INFO] [stdout]    |                      |                the same lifetime is elided here
[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] 23 | fn parse_line(input: &str) -> IResult<&str, LineType<'_>> {
[INFO] [stdout]    |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/comment.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType> {
[INFO] [stdout]    |                          ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                          |                |
[INFO] [stdout]    |                          |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn comment_parser(i: &str) -> IResult<&str, CommentType<'_>> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/samples.rs:94:24
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry> {
[INFO] [stdout]    |                        ^^^^             ^^^^  ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |                |
[INFO] [stdout]    |                        |                the same lifetime is elided here
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn parse_sample(i: &str) -> IResult<&str, SampleEntry<'_>> {
[INFO] [stdout]    |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "011e156224c9f4d0ab714c0e8d56ebdf69b1da6fec2c0b733b43cb30ff906751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011e156224c9f4d0ab714c0e8d56ebdf69b1da6fec2c0b733b43cb30ff906751", kill_on_drop: false }`
[INFO] [stdout] 011e156224c9f4d0ab714c0e8d56ebdf69b1da6fec2c0b733b43cb30ff906751
