[INFO] cloning repository https://github.com/mlemesle/word_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mlemesle/word_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlemesle%2Fword_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlemesle%2Fword_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] efe72a7e43aac36cc292df8617018c1b1bf22910
[INFO] testing mlemesle/word_tree against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlemesle%2Fword_tree" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mlemesle/word_tree on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mlemesle/word_tree
[INFO] finished tweaking git repo https://github.com/mlemesle/word_tree
[INFO] tweaked toml for git repo https://github.com/mlemesle/word_tree written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/mlemesle/word_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9382f14a6a4df313a3dd0b2ab2bcd10af173c3cd9d93e9f3aa66ff61eebbcd5a
[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" "9382f14a6a4df313a3dd0b2ab2bcd10af173c3cd9d93e9f3aa66ff61eebbcd5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9382f14a6a4df313a3dd0b2ab2bcd10af173c3cd9d93e9f3aa66ff61eebbcd5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9382f14a6a4df313a3dd0b2ab2bcd10af173c3cd9d93e9f3aa66ff61eebbcd5a", kill_on_drop: false }`
[INFO] [stdout] 9382f14a6a4df313a3dd0b2ab2bcd10af173c3cd9d93e9f3aa66ff61eebbcd5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 991e0209a14f5a7709cdea7ab40da1cf5787f2a9236b1e33fd1b21e8377e7a5a
[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" "991e0209a14f5a7709cdea7ab40da1cf5787f2a9236b1e33fd1b21e8377e7a5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling word_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/tree/tree.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn print(self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "991e0209a14f5a7709cdea7ab40da1cf5787f2a9236b1e33fd1b21e8377e7a5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991e0209a14f5a7709cdea7ab40da1cf5787f2a9236b1e33fd1b21e8377e7a5a", kill_on_drop: false }`
[INFO] [stdout] 991e0209a14f5a7709cdea7ab40da1cf5787f2a9236b1e33fd1b21e8377e7a5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e80cec9649b1bfca39059d5bdbcb392ded847985f2e7fea4eb28b96ec6c44bd2
[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" "e80cec9649b1bfca39059d5bdbcb392ded847985f2e7fea4eb28b96ec6c44bd2", kill_on_drop: false }`
[INFO] [stderr]    Compiling word_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/tree/tree.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn print(self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[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 [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "e80cec9649b1bfca39059d5bdbcb392ded847985f2e7fea4eb28b96ec6c44bd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e80cec9649b1bfca39059d5bdbcb392ded847985f2e7fea4eb28b96ec6c44bd2", kill_on_drop: false }`
[INFO] [stdout] e80cec9649b1bfca39059d5bdbcb392ded847985f2e7fea4eb28b96ec6c44bd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a657ec83331fdfacc5ef74ce0552239dcbd38ceb3ede59ba22720f8622339a40
[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" "a657ec83331fdfacc5ef74ce0552239dcbd38ceb3ede59ba22720f8622339a40", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `print`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/tree/tree.rs:75:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 75 |     pub fn print(self) {
[INFO] [stdout] 
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/word_tree-7ab7f183fccf7b13)
[INFO] running `Command { std: "docker" "inspect" "a657ec83331fdfacc5ef74ce0552239dcbd38ceb3ede59ba22720f8622339a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a657ec83331fdfacc5ef74ce0552239dcbd38ceb3ede59ba22720f8622339a40", kill_on_drop: false }`
[INFO] [stdout] a657ec83331fdfacc5ef74ce0552239dcbd38ceb3ede59ba22720f8622339a40