[INFO] cloning repository https://github.com/utter-step/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/utter-step/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futter-step%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futter-step%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c9ad8268d792f4838548afb3ba1f7fda9c192c6
[INFO] checking utter-step/rlox against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futter-step%2Frlox" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utter-step/rlox on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/utter-step/rlox
[INFO] finished tweaking git repo https://github.com/utter-step/rlox
[INFO] tweaked toml for git repo https://github.com/utter-step/rlox written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/utter-step/rlox 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/Darksecond/lox`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf v0.10.0
[INFO] [stderr]   Downloaded plotters-svg v0.3.1
[INFO] [stderr]   Downloaded serde_cbor v0.11.2
[INFO] [stderr]   Downloaded plotters-backend v0.3.2
[INFO] [stderr]   Downloaded siphasher v0.3.7
[INFO] [stderr]   Downloaded cast v0.2.7
[INFO] [stderr]   Downloaded criterion-plot v0.4.4
[INFO] [stderr]   Downloaded semver v1.0.4
[INFO] [stderr]   Downloaded serde_json v1.0.71
[INFO] [stderr]   Downloaded criterion v0.3.5
[INFO] [stderr]   Downloaded libc v0.2.107
[INFO] [stderr]   Downloaded plotters v0.3.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20befb31301156bfcf0dc524a22fbbd5dff5bf43a4677e98aee4893e26d3f53e
[INFO] running `Command { std: "docker" "start" "-a" "20befb31301156bfcf0dc524a22fbbd5dff5bf43a4677e98aee4893e26d3f53e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20befb31301156bfcf0dc524a22fbbd5dff5bf43a4677e98aee4893e26d3f53e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20befb31301156bfcf0dc524a22fbbd5dff5bf43a4677e98aee4893e26d3f53e", kill_on_drop: false }`
[INFO] [stdout] 20befb31301156bfcf0dc524a22fbbd5dff5bf43a4677e98aee4893e26d3f53e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 336c0a2c1d3d58388769de4c336a1db30fdbd842ebfc1f0e2d6e910740acc435
[INFO] running `Command { std: "docker" "start" "-a" "336c0a2c1d3d58388769de4c336a1db30fdbd842ebfc1f0e2d6e910740acc435", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]     Checking lox-syntax v0.1.0 (https://github.com/Darksecond/lox#377f31db)
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking phf v0.10.0
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `value`, `lexeme`, and `line` are never read
[INFO] [stdout]   --> src/token.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct Token<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 75 |     value: TokenValue<'a>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 76 |     lexeme: &'a str,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 77 |     line: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: fields `value`, `lexeme`, and `line` are never read
[INFO] [stdout]   --> src/token.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct Token<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 75 |     value: TokenValue<'a>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 76 |     lexeme: &'a str,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 77 |     line: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "336c0a2c1d3d58388769de4c336a1db30fdbd842ebfc1f0e2d6e910740acc435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "336c0a2c1d3d58388769de4c336a1db30fdbd842ebfc1f0e2d6e910740acc435", kill_on_drop: false }`
[INFO] [stdout] 336c0a2c1d3d58388769de4c336a1db30fdbd842ebfc1f0e2d6e910740acc435