[INFO] cloning repository https://github.com/eulegang/romulus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eulegang/romulus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feulegang%2Fromulus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feulegang%2Fromulus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9cf3d382ceafab355a7e0cd3f272394788b53cc
[INFO] checking eulegang/romulus against try#b047d5f4496a7526d91d0dddea494c05853f2a7b for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feulegang%2Fromulus" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eulegang/romulus
[INFO] finished tweaking git repo https://github.com/eulegang/romulus
[INFO] tweaked toml for git repo https://github.com/eulegang/romulus written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eulegang/romulus on toolchain b047d5f4496a7526d91d0dddea494c05853f2a7b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eulegang/romulus 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" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 697463443b9660534e071793d8207530d1644f24bf12d861cdf6c8b20a590c39
[INFO] running `Command { std: "docker" "start" "-a" "697463443b9660534e071793d8207530d1644f24bf12d861cdf6c8b20a590c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "697463443b9660534e071793d8207530d1644f24bf12d861cdf6c8b20a590c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697463443b9660534e071793d8207530d1644f24bf12d861cdf6c8b20a590c39", kill_on_drop: false }`
[INFO] [stdout] 697463443b9660534e071793d8207530d1644f24bf12d861cdf6c8b20a590c39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b047d5f4496a7526d91d0dddea494c05853f2a7b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 380ade592de5e7684d0dcd71c0b226aa3f8a2a6bec521e607e4d344c7daaac6b
[INFO] running `Command { std: "docker" "start" "-a" "380ade592de5e7684d0dcd71c0b226aa3f8a2a6bec521e607e4d344c7daaac6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking romulus v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lex/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn lex(buf: &str) -> Result<Vec<Token>, String> {
[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] 80 | pub fn lex(buf: &str) -> Result<Vec<Token<'_>>, String> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lex/mod.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn full_lex(buf: &str) -> Result<Vec<Token>, String> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn full_lex(buf: &str) -> Result<Vec<Token<'_>>, String> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lex/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn lex(buf: &str) -> Result<Vec<Token>, String> {
[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] 80 | pub fn lex(buf: &str) -> Result<Vec<Token<'_>>, String> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lex/mod.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn full_lex(buf: &str) -> Result<Vec<Token>, String> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn full_lex(buf: &str) -> Result<Vec<Token<'_>>, String> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.48s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "380ade592de5e7684d0dcd71c0b226aa3f8a2a6bec521e607e4d344c7daaac6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "380ade592de5e7684d0dcd71c0b226aa3f8a2a6bec521e607e4d344c7daaac6b", kill_on_drop: false }`
[INFO] [stdout] 380ade592de5e7684d0dcd71c0b226aa3f8a2a6bec521e607e4d344c7daaac6b