[INFO] cloning repository https://github.com/julyawang/i-f-tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julyawang/i-f-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyawang%2Fi-f-tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyawang%2Fi-f-tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b7f5e5de0a3e1da31c3f0ead2b35b89631048d58 [INFO] testing julyawang/i-f-tree against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulyawang%2Fi-f-tree" "/workspace/builds/worker-13/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/julyawang/i-f-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/julyawang/i-f-tree [INFO] finished tweaking git repo https://github.com/julyawang/i-f-tree [INFO] tweaked toml for git repo https://github.com/julyawang/i-f-tree written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/julyawang/i-f-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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] d97df25241f8405338504bef83fd88b7c868641b20f5fa991812b1985c9c6718 [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" "d97df25241f8405338504bef83fd88b7c868641b20f5fa991812b1985c9c6718", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d97df25241f8405338504bef83fd88b7c868641b20f5fa991812b1985c9c6718", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d97df25241f8405338504bef83fd88b7c868641b20f5fa991812b1985c9c6718", kill_on_drop: false }` [INFO] [stdout] d97df25241f8405338504bef83fd88b7c868641b20f5fa991812b1985c9c6718 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] fa05096d11819ce61382562cdcb2b170af1c553a37fc570b1007b4c2c607a43d [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" "fa05096d11819ce61382562cdcb2b170af1c553a37fc570b1007b4c2c607a43d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling iftree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `file_name` is never read [INFO] [stdout] --> src/main.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut file_name: String = "ifw".to_string(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var` is never read [INFO] [stdout] --> src/main.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let mut var: String = "a".to_string(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `file_name` is never read [INFO] [stdout] --> src/main.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | let mut file_name: String = "ifh".to_string(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var` is never read [INFO] [stdout] --> src/main.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut var: String = "a".to_string(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/main.rs:71:21 [INFO] [stdout] | [INFO] [stdout] 71 | for k in 0..j { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `width_main` [INFO] [stdout] --> src/main.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn width_main(max: usize) { [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 3.83s [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "fa05096d11819ce61382562cdcb2b170af1c553a37fc570b1007b4c2c607a43d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fa05096d11819ce61382562cdcb2b170af1c553a37fc570b1007b4c2c607a43d", kill_on_drop: false }` [INFO] [stdout] fa05096d11819ce61382562cdcb2b170af1c553a37fc570b1007b4c2c607a43d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 37cd174efa66c1d06e28f69e9de0409d6872ce07670900e7412e047f063c2fcd [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" "37cd174efa66c1d06e28f69e9de0409d6872ce07670900e7412e047f063c2fcd", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling iftree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `file_name` is never read [INFO] [stdout] --> src/main.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut file_name: String = "ifw".to_string(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var` is never read [INFO] [stdout] --> src/main.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let mut var: String = "a".to_string(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `file_name` is never read [INFO] [stdout] --> src/main.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 53 | let mut file_name: String = "ifh".to_string(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `var` is never read [INFO] [stdout] --> src/main.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut var: String = "a".to_string(); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/main.rs:71:21 [INFO] [stdout] | [INFO] [stdout] 71 | for k in 0..j { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let mut random = rng.gen_range::(min, max); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `width_main` [INFO] [stdout] --> src/main.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn width_main(max: usize) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.60s [INFO] running `Command { std: "docker" "inspect" "37cd174efa66c1d06e28f69e9de0409d6872ce07670900e7412e047f063c2fcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37cd174efa66c1d06e28f69e9de0409d6872ce07670900e7412e047f063c2fcd", kill_on_drop: false }` [INFO] [stdout] 37cd174efa66c1d06e28f69e9de0409d6872ce07670900e7412e047f063c2fcd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] c78cb5680399f15c4a423d4e46a886f31a73a52f3d1b5bd73c17c0d48f4215c5 [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" "c78cb5680399f15c4a423d4e46a886f31a73a52f3d1b5bd73c17c0d48f4215c5", kill_on_drop: false }` [INFO] [stderr] warning: value assigned to `file_name` is never read [INFO] [stderr] --> src/main.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | let mut file_name: String = "ifw".to_string(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `var` is never read [INFO] [stderr] --> src/main.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | let mut var: String = "a".to_string(); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `file_name` is never read [INFO] [stderr] --> src/main.rs:53:13 [INFO] [stderr] | [INFO] [stderr] 53 | let mut file_name: String = "ifh".to_string(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `var` is never read [INFO] [stderr] --> src/main.rs:54:13 [INFO] [stderr] | [INFO] [stderr] 54 | let mut var: String = "a".to_string(); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `k` [INFO] [stderr] --> src/main.rs:71:21 [INFO] [stderr] | [INFO] [stderr] 71 | for k in 0..j { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let mut random = rng.gen_range::(min, max); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:43:17 [INFO] [stderr] | [INFO] [stderr] 43 | let mut random = rng.gen_range::(min, max); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:58:9 [INFO] [stderr] | [INFO] [stderr] 58 | let mut random = rng.gen_range::(min, max); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `width_main` [INFO] [stderr] --> src/main.rs:25:4 [INFO] [stderr] | [INFO] [stderr] 25 | fn width_main(max: usize) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/iftree-969621a81d5ca78b) [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" "c78cb5680399f15c4a423d4e46a886f31a73a52f3d1b5bd73c17c0d48f4215c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c78cb5680399f15c4a423d4e46a886f31a73a52f3d1b5bd73c17c0d48f4215c5", kill_on_drop: false }` [INFO] [stdout] c78cb5680399f15c4a423d4e46a886f31a73a52f3d1b5bd73c17c0d48f4215c5