[INFO] fetching crate tsk_lib 0.0.0...
[INFO] checking tsk_lib-0.0.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate tsk_lib 0.0.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate tsk_lib 0.0.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tsk_lib 0.0.0
[INFO] finished tweaking crates.io crate tsk_lib 0.0.0
[INFO] tweaked toml for crates.io crate tsk_lib 0.0.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4bd019c53bd5b9e5dd14dd669109c0d0c38c8f6ffee575fbbea0b56e6798729
[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" "b4bd019c53bd5b9e5dd14dd669109c0d0c38c8f6ffee575fbbea0b56e6798729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4bd019c53bd5b9e5dd14dd669109c0d0c38c8f6ffee575fbbea0b56e6798729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4bd019c53bd5b9e5dd14dd669109c0d0c38c8f6ffee575fbbea0b56e6798729", kill_on_drop: false }`
[INFO] [stdout] b4bd019c53bd5b9e5dd14dd669109c0d0c38c8f6ffee575fbbea0b56e6798729
[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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c66ebc51d55b93958ed2e5c2cf8916f3814452d6195c23cf7679f0ffdcd2f162
[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" "c66ebc51d55b93958ed2e5c2cf8916f3814452d6195c23cf7679f0ffdcd2f162", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tsk_lib v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `InfixExpression`
[INFO] [stdout]   --> src/list.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 | use query::ast::{Expression, InfixExpression, AST};
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `InfixExpression`
[INFO] [stdout]   --> src/list.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 | use query::ast::{Expression, InfixExpression, AST};
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]    --> src/list.rs:142:31
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn eval<'a>(&'a mut self, exp: Expression) -> Vec<&'a Task> {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]    --> src/list.rs:142:31
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn eval<'a>(&'a mut self, exp: Expression) -> Vec<&'a Task> {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.30s
[INFO] running `Command { std: "docker" "inspect" "c66ebc51d55b93958ed2e5c2cf8916f3814452d6195c23cf7679f0ffdcd2f162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c66ebc51d55b93958ed2e5c2cf8916f3814452d6195c23cf7679f0ffdcd2f162", kill_on_drop: false }`
[INFO] [stdout] c66ebc51d55b93958ed2e5c2cf8916f3814452d6195c23cf7679f0ffdcd2f162