[INFO] cloning repository https://github.com/srinivas991/read-and-parse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/srinivas991/read-and-parse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrinivas991%2Fread-and-parse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrinivas991%2Fread-and-parse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fead0ec89a2a7a67a13e541d80bb770fbd72eea
[INFO] checking srinivas991/read-and-parse against master#6a9758d4f38d4763bd437c48fa7e5246cecf8d04 for pr-124355
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrinivas991%2Fread-and-parse" "/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/srinivas991/read-and-parse on toolchain 6a9758d4f38d4763bd437c48fa7e5246cecf8d04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a9758d4f38d4763bd437c48fa7e5246cecf8d04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/srinivas991/read-and-parse
[INFO] finished tweaking git repo https://github.com/srinivas991/read-and-parse
[INFO] tweaked toml for git repo https://github.com/srinivas991/read-and-parse written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/srinivas991/read-and-parse 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" "+6a9758d4f38d4763bd437c48fa7e5246cecf8d04" "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 srinivas991/read-and-parse against try#99e7531f0d1cf95a50aff9cccb24863963e6bbe2 for pr-124355
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsrinivas991%2Fread-and-parse" "/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/srinivas991/read-and-parse on toolchain 99e7531f0d1cf95a50aff9cccb24863963e6bbe2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/srinivas991/read-and-parse
[INFO] finished tweaking git repo https://github.com/srinivas991/read-and-parse
[INFO] tweaked toml for git repo https://github.com/srinivas991/read-and-parse written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/srinivas991/read-and-parse 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" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 595f3934537719720e8f3021b4b61522f40762cb7611df5cbd750536d458ed63
[INFO] running `Command { std: "docker" "start" "-a" "595f3934537719720e8f3021b4b61522f40762cb7611df5cbd750536d458ed63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "595f3934537719720e8f3021b4b61522f40762cb7611df5cbd750536d458ed63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595f3934537719720e8f3021b4b61522f40762cb7611df5cbd750536d458ed63", kill_on_drop: false }`
[INFO] [stdout] 595f3934537719720e8f3021b4b61522f40762cb7611df5cbd750536d458ed63
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+99e7531f0d1cf95a50aff9cccb24863963e6bbe2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46a6e2394a9c7cb293c59e0c446cdfc47be02acd5fba0e0bc11519fe0065c80e
[INFO] running `Command { std: "docker" "start" "-a" "46a6e2394a9c7cb293c59e0c446cdfc47be02acd5fba0e0bc11519fe0065c80e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]     Checking read-and-parse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/main.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> src/main.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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` profile [unoptimized + debuginfo] target(s) in 3.42s
[INFO] running `Command { std: "docker" "inspect" "46a6e2394a9c7cb293c59e0c446cdfc47be02acd5fba0e0bc11519fe0065c80e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a6e2394a9c7cb293c59e0c446cdfc47be02acd5fba0e0bc11519fe0065c80e", kill_on_drop: false }`
[INFO] [stdout] 46a6e2394a9c7cb293c59e0c446cdfc47be02acd5fba0e0bc11519fe0065c80e