[INFO] cloning repository https://github.com/nasso/rscc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nasso/rscc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasso%2Frscc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasso%2Frscc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6715bcc37b0b06ad6423af7c4d762289df66921
[INFO] checking nasso/rscc against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnasso%2Frscc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nasso/rscc on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nasso/rscc
[INFO] finished tweaking git repo https://github.com/nasso/rscc
[INFO] tweaked toml for git repo https://github.com/nasso/rscc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/nasso/rscc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v5.0.0-beta2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e7914270b48a0242e9da703258d7cf41dc8b3f430c59c068fd80387d3591be0
[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" "1e7914270b48a0242e9da703258d7cf41dc8b3f430c59c068fd80387d3591be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e7914270b48a0242e9da703258d7cf41dc8b3f430c59c068fd80387d3591be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7914270b48a0242e9da703258d7cf41dc8b3f430c59c068fd80387d3591be0", kill_on_drop: false }`
[INFO] [stdout] 1e7914270b48a0242e9da703258d7cf41dc8b3f430c59c068fd80387d3591be0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0998db74e22a8f6dcf024d72dc1eb896d834d2a27cc8b3bec1fda14a30c493f7
[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" "0998db74e22a8f6dcf024d72dc1eb896d834d2a27cc8b3bec1fda14a30c493f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling nom v5.0.0-beta2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking stackvector v1.0.2
[INFO] [stderr]     Checking lexical-core v0.4.0
[INFO] [stderr]     Checking rscc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `pp_tokens`
[INFO] [stdout]   --> src/pre/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let pp_tokens = parse::parse_preprocessing_file::<VerboseError<&str>>(&source)
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pp_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pp_tokens`
[INFO] [stdout]   --> src/pre/mod.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let pp_tokens = parse::parse_preprocessing_file::<VerboseError<&str>>(&source)
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pp_tokens`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.67s
[INFO] running `Command { std: "docker" "inspect" "0998db74e22a8f6dcf024d72dc1eb896d834d2a27cc8b3bec1fda14a30c493f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0998db74e22a8f6dcf024d72dc1eb896d834d2a27cc8b3bec1fda14a30c493f7", kill_on_drop: false }`
[INFO] [stdout] 0998db74e22a8f6dcf024d72dc1eb896d834d2a27cc8b3bec1fda14a30c493f7