[INFO] cloning repository https://github.com/kentfredric/portage_repo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kentfredric/portage_repo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkentfredric%2Fportage_repo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkentfredric%2Fportage_repo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b9bd88eb4df70fed96a7c38ab7e1a3f52b6d5f9
[INFO] checking kentfredric/portage_repo against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkentfredric%2Fportage_repo" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kentfredric/portage_repo
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/kentfredric/portage_repo
[INFO] tweaked toml for git repo https://github.com/kentfredric/portage_repo written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kentfredric/portage_repo on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kentfredric/portage_repo 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking kentfredric/portage_repo against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkentfredric%2Fportage_repo" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kentfredric/portage_repo
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/kentfredric/portage_repo
[INFO] tweaked toml for git repo https://github.com/kentfredric/portage_repo written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kentfredric/portage_repo on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kentfredric/portage_repo 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "fetch" "--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 display_attr v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64b1d309e094494125284b410798581a8ccbd4228ac7d9f74b312e4b1992e611
[INFO] running `Command { std: "docker" "start" "-a" "64b1d309e094494125284b410798581a8ccbd4228ac7d9f74b312e4b1992e611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64b1d309e094494125284b410798581a8ccbd4228ac7d9f74b312e4b1992e611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b1d309e094494125284b410798581a8ccbd4228ac7d9f74b312e4b1992e611", kill_on_drop: false }`
[INFO] [stdout] 64b1d309e094494125284b410798581a8ccbd4228ac7d9f74b312e4b1992e611
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d8200162a42f8c19b4df4767cdf4d1fa01871383119cef6b33b35931c9e783d
[INFO] running `Command { std: "docker" "start" "-a" "3d8200162a42f8c19b4df4767cdf4d1fa01871383119cef6b33b35931c9e783d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling display_attr v0.1.1
[INFO] [stderr]     Checking portage_repo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]   --> src/iter.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct CategoryFileIterator {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 20 |     root:        PathBuf,
[INFO] [stdout] 21 |     file:        PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CategoryFileIterator` 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: field `file` is never read
[INFO] [stdout]   --> src/iter.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct CategoryFileIterator {
[INFO] [stdout]    |            -------------------- field in this struct
[INFO] [stdout] 20 |     root:        PathBuf,
[INFO] [stdout] 21 |     file:        PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CategoryFileIterator` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "3d8200162a42f8c19b4df4767cdf4d1fa01871383119cef6b33b35931c9e783d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d8200162a42f8c19b4df4767cdf4d1fa01871383119cef6b33b35931c9e783d", kill_on_drop: false }`
[INFO] [stdout] 3d8200162a42f8c19b4df4767cdf4d1fa01871383119cef6b33b35931c9e783d