[INFO] cloning repository https://github.com/DCP-solved-with-Rust/dcp_00003
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DCP-solved-with-Rust/dcp_00003" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCP-solved-with-Rust%2Fdcp_00003", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCP-solved-with-Rust%2Fdcp_00003'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d76f6932e578d891f5433167a477c8e9c7e5ee03
[INFO] testing DCP-solved-with-Rust/dcp_00003 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDCP-solved-with-Rust%2Fdcp_00003" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DCP-solved-with-Rust/dcp_00003 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DCP-solved-with-Rust/dcp_00003
[INFO] finished tweaking git repo https://github.com/DCP-solved-with-Rust/dcp_00003
[INFO] tweaked toml for git repo https://github.com/DCP-solved-with-Rust/dcp_00003 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/DCP-solved-with-Rust/dcp_00003 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3463e3f916283d3a4bcdbf449735d06e3a3bb6237d064b7bb7e6e1ef310d1132
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3463e3f916283d3a4bcdbf449735d06e3a3bb6237d064b7bb7e6e1ef310d1132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3463e3f916283d3a4bcdbf449735d06e3a3bb6237d064b7bb7e6e1ef310d1132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3463e3f916283d3a4bcdbf449735d06e3a3bb6237d064b7bb7e6e1ef310d1132", kill_on_drop: false }`
[INFO] [stdout] 3463e3f916283d3a4bcdbf449735d06e3a3bb6237d064b7bb7e6e1ef310d1132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 04036f778bc1ede4c8bcc005da21d469e8ab13a4fd645bcf038a222d85a9616f
[INFO] running `Command { std: "docker" "start" "-a" "04036f778bc1ede4c8bcc005da21d469e8ab13a4fd645bcf038a222d85a9616f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling serde_derive v1.0.66
[INFO] [stderr]    Compiling serde_json v1.0.20
[INFO] [stderr]    Compiling dcp_00003 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `serialize`
[INFO] [stdout]   --> src/lib.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn serialize (root: Node) -> String
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deserialize`
[INFO] [stdout]   --> src/lib.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn deserialize (s: String) -> Node
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.03s
[INFO] running `Command { std: "docker" "inspect" "04036f778bc1ede4c8bcc005da21d469e8ab13a4fd645bcf038a222d85a9616f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04036f778bc1ede4c8bcc005da21d469e8ab13a4fd645bcf038a222d85a9616f", kill_on_drop: false }`
[INFO] [stdout] 04036f778bc1ede4c8bcc005da21d469e8ab13a4fd645bcf038a222d85a9616f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f4ff14444c4cc37b91c5ef0b1d9a10d84003a6836a95af4d39d518115a466d8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3f4ff14444c4cc37b91c5ef0b1d9a10d84003a6836a95af4d39d518115a466d8", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `serialize`
[INFO] [stdout]   --> src/lib.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn serialize (root: Node) -> String
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deserialize`
[INFO] [stdout]   --> src/lib.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn deserialize (s: String) -> Node
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dcp_00003 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "3f4ff14444c4cc37b91c5ef0b1d9a10d84003a6836a95af4d39d518115a466d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f4ff14444c4cc37b91c5ef0b1d9a10d84003a6836a95af4d39d518115a466d8", kill_on_drop: false }`
[INFO] [stdout] 3f4ff14444c4cc37b91c5ef0b1d9a10d84003a6836a95af4d39d518115a466d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0dfab3057a0b924f7eeb0e5a0ca26e9a24e28bbd296993e0edb008d564a888f6
[INFO] running `Command { std: "docker" "start" "-a" "0dfab3057a0b924f7eeb0e5a0ca26e9a24e28bbd296993e0edb008d564a888f6", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `serialize`
[INFO] [stderr]   --> src/lib.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn serialize (root: Node) -> String
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/lib.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn deserialize (s: String) -> Node
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dcp_00003-9d8d3ec7a44c03b6)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests dcp_00003
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "0dfab3057a0b924f7eeb0e5a0ca26e9a24e28bbd296993e0edb008d564a888f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dfab3057a0b924f7eeb0e5a0ca26e9a24e28bbd296993e0edb008d564a888f6", kill_on_drop: false }`
[INFO] [stdout] 0dfab3057a0b924f7eeb0e5a0ca26e9a24e28bbd296993e0edb008d564a888f6