[INFO] cloning repository https://github.com/balderstonb/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/balderstonb/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbalderstonb%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbalderstonb%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3a842561a143875ace3a603a574421590f8e641
[INFO] testing balderstonb/rust against master#0d13f6afeba4935499abe0c9a07426c94492c94e for pr-96025
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbalderstonb%2Frust" "/workspace/builds/worker-72/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-72/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/balderstonb/rust on toolchain 0d13f6afeba4935499abe0c9a07426c94492c94e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/balderstonb/rust
[INFO] finished tweaking git repo https://github.com/balderstonb/rust
[INFO] tweaked toml for git repo https://github.com/balderstonb/rust written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] crate git repo https://github.com/balderstonb/rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ceacc84aca159f66a4d416e535c4328ee120d2d783ee9de92c0879b868d5ec8
[INFO] running `Command { std: "docker" "start" "-a" "3ceacc84aca159f66a4d416e535c4328ee120d2d783ee9de92c0879b868d5ec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ceacc84aca159f66a4d416e535c4328ee120d2d783ee9de92c0879b868d5ec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ceacc84aca159f66a4d416e535c4328ee120d2d783ee9de92c0879b868d5ec8", kill_on_drop: false }`
[INFO] [stdout] 3ceacc84aca159f66a4d416e535c4328ee120d2d783ee9de92c0879b868d5ec8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57d6b25c2dd0cb83c2f0fc7b731e9eb0f005d35b135f1671b1753eb56f5e5aa5
[INFO] running `Command { std: "docker" "start" "-a" "57d6b25c2dd0cb83c2f0fc7b731e9eb0f005d35b135f1671b1753eb56f5e5aa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     (sum as f32 / size as f32)
[INFO] [stdout]    |     ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 -     (sum as f32 / size as f32)
[INFO] [stdout] 19 +     sum as f32 / size as f32
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "57d6b25c2dd0cb83c2f0fc7b731e9eb0f005d35b135f1671b1753eb56f5e5aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57d6b25c2dd0cb83c2f0fc7b731e9eb0f005d35b135f1671b1753eb56f5e5aa5", kill_on_drop: false }`
[INFO] [stdout] 57d6b25c2dd0cb83c2f0fc7b731e9eb0f005d35b135f1671b1753eb56f5e5aa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8c5a5cb2d5dd1305cc060b058f3972d8d99beab9e028a92a1d561e87fc5e62b
[INFO] running `Command { std: "docker" "start" "-a" "b8c5a5cb2d5dd1305cc060b058f3972d8d99beab9e028a92a1d561e87fc5e62b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     (sum as f32 / size as f32)
[INFO] [stdout]    |     ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 -     (sum as f32 / size as f32)
[INFO] [stdout] 19 +     sum as f32 / size as f32
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.21s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/stats-98731ada3b84f634)
[INFO] running `Command { std: "docker" "inspect" "b8c5a5cb2d5dd1305cc060b058f3972d8d99beab9e028a92a1d561e87fc5e62b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c5a5cb2d5dd1305cc060b058f3972d8d99beab9e028a92a1d561e87fc5e62b", kill_on_drop: false }`
[INFO] [stdout] b8c5a5cb2d5dd1305cc060b058f3972d8d99beab9e028a92a1d561e87fc5e62b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41d9083e93168626c1538f1d6c0179c24efa813439afb19f12366b62fe48746e
[INFO] running `Command { std: "docker" "start" "-a" "41d9083e93168626c1538f1d6c0179c24efa813439afb19f12366b62fe48746e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "41d9083e93168626c1538f1d6c0179c24efa813439afb19f12366b62fe48746e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41d9083e93168626c1538f1d6c0179c24efa813439afb19f12366b62fe48746e", kill_on_drop: false }`
[INFO] [stdout] 41d9083e93168626c1538f1d6c0179c24efa813439afb19f12366b62fe48746e