[INFO] fetching crate tsk_lib 0.0.0...
[INFO] checking tsk_lib-0.0.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate tsk_lib 0.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tsk_lib 0.0.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", 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] b9164e908bd63b144083bbeb81b66d94a3f3fdfa314793360b7001f520c0c853
[INFO] running `Command { std: "docker" "start" "-a" "b9164e908bd63b144083bbeb81b66d94a3f3fdfa314793360b7001f520c0c853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9164e908bd63b144083bbeb81b66d94a3f3fdfa314793360b7001f520c0c853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9164e908bd63b144083bbeb81b66d94a3f3fdfa314793360b7001f520c0c853", kill_on_drop: false }`
[INFO] [stdout] b9164e908bd63b144083bbeb81b66d94a3f3fdfa314793360b7001f520c0c853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--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] c61b044d3b794a04fd2e1e4c5b5d27ac90af093b4629cac4e99aec3e5250cf3f
[INFO] running `Command { std: "docker" "start" "-a" "c61b044d3b794a04fd2e1e4c5b5d27ac90af093b4629cac4e99aec3e5250cf3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking chrono v0.4.15
[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 37.54s
[INFO] running `Command { std: "docker" "inspect" "c61b044d3b794a04fd2e1e4c5b5d27ac90af093b4629cac4e99aec3e5250cf3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61b044d3b794a04fd2e1e4c5b5d27ac90af093b4629cac4e99aec3e5250cf3f", kill_on_drop: false }`
[INFO] [stdout] c61b044d3b794a04fd2e1e4c5b5d27ac90af093b4629cac4e99aec3e5250cf3f