[INFO] cloning repository https://github.com/djdietrick/rust-link-fs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djdietrick/rust-link-fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdietrick%2Frust-link-fs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdietrick%2Frust-link-fs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e19eac6125deea426f27596283cfb51e10892950
[INFO] checking djdietrick/rust-link-fs against master#e9271846294c4ee5bd7706df68180320c0b5ff20 for pr-119820
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdietrick%2Frust-link-fs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djdietrick/rust-link-fs on toolchain e9271846294c4ee5bd7706df68180320c0b5ff20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9271846294c4ee5bd7706df68180320c0b5ff20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djdietrick/rust-link-fs
[INFO] finished tweaking git repo https://github.com/djdietrick/rust-link-fs
[INFO] tweaked toml for git repo https://github.com/djdietrick/rust-link-fs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/djdietrick/rust-link-fs 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" "+e9271846294c4ee5bd7706df68180320c0b5ff20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking djdietrick/rust-link-fs against try#b69bfeecc49bf5661cf54497638430035ff61aa4 for pr-119820
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjdietrick%2Frust-link-fs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djdietrick/rust-link-fs on toolchain b69bfeecc49bf5661cf54497638430035ff61aa4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b69bfeecc49bf5661cf54497638430035ff61aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djdietrick/rust-link-fs
[INFO] finished tweaking git repo https://github.com/djdietrick/rust-link-fs
[INFO] tweaked toml for git repo https://github.com/djdietrick/rust-link-fs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/djdietrick/rust-link-fs 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" "+b69bfeecc49bf5661cf54497638430035ff61aa4" "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] 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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b69bfeecc49bf5661cf54497638430035ff61aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 578ad051461aa349dd7d60021206fd6cecb8a285657b706019f54067dfed0ace
[INFO] running `Command { std: "docker" "start" "-a" "578ad051461aa349dd7d60021206fd6cecb8a285657b706019f54067dfed0ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "578ad051461aa349dd7d60021206fd6cecb8a285657b706019f54067dfed0ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "578ad051461aa349dd7d60021206fd6cecb8a285657b706019f54067dfed0ace", kill_on_drop: false }`
[INFO] [stdout] 578ad051461aa349dd7d60021206fd6cecb8a285657b706019f54067dfed0ace
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b69bfeecc49bf5661cf54497638430035ff61aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f28951d3573194bc8a62e031792a599537b9f15eabf339987399e8eb929baf7a
[INFO] running `Command { std: "docker" "start" "-a" "f28951d3573194bc8a62e031792a599537b9f15eabf339987399e8eb929baf7a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-link-fs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `File` is never constructed
[INFO] [stdout]  --> src/node.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Type {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 4 |     File,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mkdir`, `touch`, and `cd` are never used
[INFO] [stdout]   --> src/node.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Node {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn mkdir(&mut self, n: String) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn touch(&mut self, n: String, url: String) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn cd(self, n: String) -> Result<Node, String> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `File` is never constructed
[INFO] [stdout]  --> src/node.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Type {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 4 |     File,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `mkdir`, `touch`, and `cd` are never used
[INFO] [stdout]   --> src/node.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Node {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn mkdir(&mut self, n: String) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn touch(&mut self, n: String, url: String) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn cd(self, n: String) -> Result<Node, String> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "f28951d3573194bc8a62e031792a599537b9f15eabf339987399e8eb929baf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f28951d3573194bc8a62e031792a599537b9f15eabf339987399e8eb929baf7a", kill_on_drop: false }`
[INFO] [stdout] f28951d3573194bc8a62e031792a599537b9f15eabf339987399e8eb929baf7a