[INFO] fetching crate rust_sm 0.1.4...
[INFO] checking rust_sm-0.1.4 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate rust_sm 0.1.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rust_sm 0.1.4 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_sm 0.1.4
[INFO] finished tweaking crates.io crate rust_sm 0.1.4
[INFO] tweaked toml for crates.io crate rust_sm 0.1.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rust_sm 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d45205fb9c9c207be680a6a38005144ab9ca9a619ed4c4c9261aa0d07faae468
[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" "d45205fb9c9c207be680a6a38005144ab9ca9a619ed4c4c9261aa0d07faae468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d45205fb9c9c207be680a6a38005144ab9ca9a619ed4c4c9261aa0d07faae468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d45205fb9c9c207be680a6a38005144ab9ca9a619ed4c4c9261aa0d07faae468", kill_on_drop: false }`
[INFO] [stdout] d45205fb9c9c207be680a6a38005144ab9ca9a619ed4c4c9261aa0d07faae468
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0fad26a024adf26b0f0740ea921f552d077b7c8f34646876f170bd49a64b68e
[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" "a0fad26a024adf26b0f0740ea921f552d077b7c8f34646876f170bd49a64b68e", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling rust_sm v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking libloading v0.6.3
[INFO] [stderr] warning: outdir="/opt/rustwide/target/debug/build/rust_sm-72a930fe9487d3bf/out"
[INFO] [stderr] warning: MESSAGE
[INFO] [stdout] warning: unused import: `OnceCell`
[INFO] [stdout]  --> src/clib/tools.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use once_cell::sync::{Lazy, OnceCell};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[warn(unused_imports)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OnceCell`
[INFO] [stdout]  --> src/clib/tools.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use once_cell::sync::{Lazy, OnceCell};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[warn(unused_imports)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/lib.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let b = clib::tools::Hi();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/lib.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let b = clib::tools::Hi();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[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] [stdout] warning: unused import: `OnceCell`
[INFO] [stdout]  --> src/clib/tools.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use once_cell::sync::{Lazy, OnceCell};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/bin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[warn(unused_imports)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OnceCell`
[INFO] [stdout]  --> src/clib/tools.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use once_cell::sync::{Lazy, OnceCell};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/bin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[warn(unused_imports)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/bin.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     test();
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]  --> src/bin.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     test();
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.57s
[INFO] running `Command { std: "docker" "inspect" "a0fad26a024adf26b0f0740ea921f552d077b7c8f34646876f170bd49a64b68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0fad26a024adf26b0f0740ea921f552d077b7c8f34646876f170bd49a64b68e", kill_on_drop: false }`
[INFO] [stdout] a0fad26a024adf26b0f0740ea921f552d077b7c8f34646876f170bd49a64b68e