[INFO] fetching crate chunk-json-lite 0.1.0...
[INFO] testing chunk-json-lite-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate chunk-json-lite 0.1.0 into /workspace/builds/worker-110/source
[INFO] validating manifest of crates.io crate chunk-json-lite 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chunk-json-lite 0.1.0
[INFO] finished tweaking crates.io crate chunk-json-lite 0.1.0
[INFO] tweaked toml for crates.io crate chunk-json-lite 0.1.0 written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] crate crates.io crate chunk-json-lite 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 json v0.12.0
[INFO] [stderr]   Downloaded main_error v0.1.0
[INFO] [stderr]   Downloaded human-size v0.4.0
[INFO] [stderr]   Downloaded count-write v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40e61cfc3aaca4a6cd729efa7ff0c3dec85c13a4180f78af0598c696cdd6c869
[INFO] running `Command { std: "docker" "start" "-a" "40e61cfc3aaca4a6cd729efa7ff0c3dec85c13a4180f78af0598c696cdd6c869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40e61cfc3aaca4a6cd729efa7ff0c3dec85c13a4180f78af0598c696cdd6c869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e61cfc3aaca4a6cd729efa7ff0c3dec85c13a4180f78af0598c696cdd6c869", kill_on_drop: false }`
[INFO] [stdout] 40e61cfc3aaca4a6cd729efa7ff0c3dec85c13a4180f78af0598c696cdd6c869
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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=warn" "-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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5090ebf2cf5c39deb1db1961e3cf2b765f78e549ce5b7ef33dfead159e867f8
[INFO] running `Command { std: "docker" "start" "-a" "a5090ebf2cf5c39deb1db1961e3cf2b765f78e549ce5b7ef33dfead159e867f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling json v0.12.0
[INFO] [stderr]    Compiling main_error v0.1.0
[INFO] [stderr]    Compiling count-write v0.1.0
[INFO] [stderr]    Compiling human-size v0.4.0
[INFO] [stderr]    Compiling chunk-json-lite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             mem::replace(&mut writer, new);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.16s
[INFO] running `Command { std: "docker" "inspect" "a5090ebf2cf5c39deb1db1961e3cf2b765f78e549ce5b7ef33dfead159e867f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5090ebf2cf5c39deb1db1961e3cf2b765f78e549ce5b7ef33dfead159e867f8", kill_on_drop: false }`
[INFO] [stdout] a5090ebf2cf5c39deb1db1961e3cf2b765f78e549ce5b7ef33dfead159e867f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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=warn" "-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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97f301d0adfafdd48d80f94890df1ca0daf1089a73adf39b681ded2eeb3f25d1
[INFO] running `Command { std: "docker" "start" "-a" "97f301d0adfafdd48d80f94890df1ca0daf1089a73adf39b681ded2eeb3f25d1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling chunk-json-lite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             mem::replace(&mut writer, new);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "97f301d0adfafdd48d80f94890df1ca0daf1089a73adf39b681ded2eeb3f25d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f301d0adfafdd48d80f94890df1ca0daf1089a73adf39b681ded2eeb3f25d1", kill_on_drop: false }`
[INFO] [stdout] 97f301d0adfafdd48d80f94890df1ca0daf1089a73adf39b681ded2eeb3f25d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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=warn" "-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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e4c486e1486ab16032854ca981eabe349e0a205c1245cdb8e889d0e28b8ad06
[INFO] running `Command { std: "docker" "start" "-a" "5e4c486e1486ab16032854ca981eabe349e0a205c1245cdb8e889d0e28b8ad06", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/main.rs:49:13
[INFO] [stderr]    |
[INFO] [stderr] 49 |             mem::replace(&mut writer, new);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `chunk-json-lite` (bin "chunk-json-lite" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chunk_json_lite-7ae8b08cdcf86093)
[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" "5e4c486e1486ab16032854ca981eabe349e0a205c1245cdb8e889d0e28b8ad06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e4c486e1486ab16032854ca981eabe349e0a205c1245cdb8e889d0e28b8ad06", kill_on_drop: false }`
[INFO] [stdout] 5e4c486e1486ab16032854ca981eabe349e0a205c1245cdb8e889d0e28b8ad06