[INFO] fetching crate slr_config 0.0.20...
[INFO] checking slr_config-0.0.20 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] extracting crate slr_config 0.0.20 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate slr_config 0.0.20 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slr_config 0.0.20
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate slr_config 0.0.20
[INFO] tweaked toml for crates.io crate slr_config 0.0.20 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate slr_config 0.0.20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1acc416d7eb52a7ee32536e0f1b6077ac062b7ff52d0b67b5ddd81d3d612f89b
[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" "1acc416d7eb52a7ee32536e0f1b6077ac062b7ff52d0b67b5ddd81d3d612f89b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1acc416d7eb52a7ee32536e0f1b6077ac062b7ff52d0b67b5ddd81d3d612f89b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1acc416d7eb52a7ee32536e0f1b6077ac062b7ff52d0b67b5ddd81d3d612f89b", kill_on_drop: false }`
[INFO] [stdout] 1acc416d7eb52a7ee32536e0f1b6077ac062b7ff52d0b67b5ddd81d3d612f89b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "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] 0e08ed846772c7d099bdaeb63629a1f3d80af591bcf9fe7b40e23c8eb8f414bc
[INFO] running `Command { std: "docker" "start" "-a" "0e08ed846772c7d099bdaeb63629a1f3d80af591bcf9fe7b40e23c8eb8f414bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking slr_parser v0.0.20
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking slr_config v0.0.20 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/de.rs:406:61
[INFO] [stdout]     |
[INFO] [stdout] 406 |             <T as FromStr>::from_str(value).map_err(|e| self.error(e.description()))
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/de.rs:406:61
[INFO] [stdout]     |
[INFO] [stdout] 406 |             <T as FromStr>::from_str(value).map_err(|e| self.error(e.description()))
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.89s
[INFO] running `Command { std: "docker" "inspect" "0e08ed846772c7d099bdaeb63629a1f3d80af591bcf9fe7b40e23c8eb8f414bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e08ed846772c7d099bdaeb63629a1f3d80af591bcf9fe7b40e23c8eb8f414bc", kill_on_drop: false }`
[INFO] [stdout] 0e08ed846772c7d099bdaeb63629a1f3d80af591bcf9fe7b40e23c8eb8f414bc