[INFO] cloning repository https://github.com/sebastien-mariaux/list-it [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sebastien-mariaux/list-it" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebastien-mariaux%2Flist-it", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebastien-mariaux%2Flist-it'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 32214044165f900db1d39a532c8a59e5a85ff97a [INFO] checking sebastien-mariaux/list-it against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsebastien-mariaux%2Flist-it" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sebastien-mariaux/list-it on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sebastien-mariaux/list-it [INFO] finished tweaking git repo https://github.com/sebastien-mariaux/list-it [INFO] tweaked toml for git repo https://github.com/sebastien-mariaux/list-it written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/sebastien-mariaux/list-it already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 717b56347c8812809077b1cab30a7c710581223a538ad86062860f18e2c8e74d [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" "717b56347c8812809077b1cab30a7c710581223a538ad86062860f18e2c8e74d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "717b56347c8812809077b1cab30a7c710581223a538ad86062860f18e2c8e74d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "717b56347c8812809077b1cab30a7c710581223a538ad86062860f18e2c8e74d", kill_on_drop: false }` [INFO] [stdout] 717b56347c8812809077b1cab30a7c710581223a538ad86062860f18e2c8e74d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 359136600a542b376608523a1c8896e87613ba0be0ebbb87c767d55bf55c5dd5 [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" "359136600a542b376608523a1c8896e87613ba0be0ebbb87c767d55bf55c5dd5", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Checking serde v1.0.130 [INFO] [stderr] Checking listit v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/builder.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::list` [INFO] [stdout] --> src/program.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::list; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::Program` [INFO] [stdout] --> src/program.rs:187:9 [INFO] [stdout] | [INFO] [stdout] 187 | use super::Program; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::list` [INFO] [stdout] --> src/program.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::list; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `deletion` [INFO] [stdout] --> src/list_of_lists.rs:204:13 [INFO] [stdout] | [INFO] [stdout] 204 | let deletion = list_of_lists.delete_list(2); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_deletion` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/list_of_lists.rs:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | write!(file, "{}", &content.as_str()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/list_of_lists.rs:85:17 [INFO] [stdout] | [INFO] [stdout] 85 | write!(file, "{}", &content.as_str()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/list_of_lists.rs:189:9 [INFO] [stdout] | [INFO] [stdout] 189 | fs::remove_file(&filename); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 36.53s [INFO] running `Command { std: "docker" "inspect" "359136600a542b376608523a1c8896e87613ba0be0ebbb87c767d55bf55c5dd5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "359136600a542b376608523a1c8896e87613ba0be0ebbb87c767d55bf55c5dd5", kill_on_drop: false }` [INFO] [stdout] 359136600a542b376608523a1c8896e87613ba0be0ebbb87c767d55bf55c5dd5