[INFO] cloning repository https://github.com/emersonmde/maybe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emersonmde/maybe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femersonmde%2Fmaybe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femersonmde%2Fmaybe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4e58704aa697f3e9aada5e3e4fcf6939f8ff601
[INFO] testing emersonmde/maybe against master#595316b4006932405a63862d8fe65f71a6356293 for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femersonmde%2Fmaybe" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emersonmde/maybe on toolchain 595316b4006932405a63862d8fe65f71a6356293
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+595316b4006932405a63862d8fe65f71a6356293" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emersonmde/maybe
[INFO] finished tweaking git repo https://github.com/emersonmde/maybe
[INFO] tweaked toml for git repo https://github.com/emersonmde/maybe written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/emersonmde/maybe 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" "+595316b4006932405a63862d8fe65f71a6356293" "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
[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] testing emersonmde/maybe against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femersonmde%2Fmaybe" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emersonmde/maybe on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emersonmde/maybe
[INFO] finished tweaking git repo https://github.com/emersonmde/maybe
[INFO] tweaked toml for git repo https://github.com/emersonmde/maybe written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/emersonmde/maybe 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing emersonmde/maybe against try#5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b for pr-128254
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femersonmde%2Fmaybe" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emersonmde/maybe on toolchain 5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emersonmde/maybe
[INFO] finished tweaking git repo https://github.com/emersonmde/maybe
[INFO] tweaked toml for git repo https://github.com/emersonmde/maybe written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/emersonmde/maybe 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" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04aecc6c000c9577e124d043b533f42a663799c7a569a143df825e49573c6cb3
[INFO] running `Command { std: "docker" "start" "-a" "04aecc6c000c9577e124d043b533f42a663799c7a569a143df825e49573c6cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04aecc6c000c9577e124d043b533f42a663799c7a569a143df825e49573c6cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04aecc6c000c9577e124d043b533f42a663799c7a569a143df825e49573c6cb3", kill_on_drop: false }`
[INFO] [stdout] 04aecc6c000c9577e124d043b533f42a663799c7a569a143df825e49573c6cb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 232d8f82f35de0d18471a6abc822ea04edc620dcdbe25384a72d56ac21831f53
[INFO] running `Command { std: "docker" "start" "-a" "232d8f82f35de0d18471a6abc822ea04edc620dcdbe25384a72d56ac21831f53", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling block-buffer v0.10.3
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling sha2 v0.10.6
[INFO] [stderr]    Compiling maybe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Branch` is never constructed
[INFO] [stdout]   --> src/node.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum Node {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Branch {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is 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 2.50s
[INFO] running `Command { std: "docker" "inspect" "232d8f82f35de0d18471a6abc822ea04edc620dcdbe25384a72d56ac21831f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232d8f82f35de0d18471a6abc822ea04edc620dcdbe25384a72d56ac21831f53", kill_on_drop: false }`
[INFO] [stdout] 232d8f82f35de0d18471a6abc822ea04edc620dcdbe25384a72d56ac21831f53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34032581f663aa8f10b8d508e413f8b68f35638cc92196b04075151c7c809279
[INFO] running `Command { std: "docker" "start" "-a" "34032581f663aa8f10b8d508e413f8b68f35638cc92196b04075151c7c809279", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Branch` is never constructed
[INFO] [stdout]   --> src/node.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum Node {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Branch {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is 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 `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "34032581f663aa8f10b8d508e413f8b68f35638cc92196b04075151c7c809279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34032581f663aa8f10b8d508e413f8b68f35638cc92196b04075151c7c809279", kill_on_drop: false }`
[INFO] [stdout] 34032581f663aa8f10b8d508e413f8b68f35638cc92196b04075151c7c809279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5e89635d7bf1d3033c2eb20378b7b3cbe2dd1a9b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3196c169d083ca55d3b3dba5187ea2ce6397ab9191b54e302ed2224d9587b4ee
[INFO] running `Command { std: "docker" "start" "-a" "3196c169d083ca55d3b3dba5187ea2ce6397ab9191b54e302ed2224d9587b4ee", kill_on_drop: false }`
[INFO] [stderr] warning: variant `Branch` is never constructed
[INFO] [stderr]   --> src/node.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 6  | pub enum Node {
[INFO] [stderr]    |          ---- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 11 |     Branch {
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `maybe` (bin "maybe" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/maybe-d392721912b53a97)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3196c169d083ca55d3b3dba5187ea2ce6397ab9191b54e302ed2224d9587b4ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3196c169d083ca55d3b3dba5187ea2ce6397ab9191b54e302ed2224d9587b4ee", kill_on_drop: false }`
[INFO] [stdout] 3196c169d083ca55d3b3dba5187ea2ce6397ab9191b54e302ed2224d9587b4ee