[INFO] fetching crate prexcl 0.0.10...
[INFO] checking prexcl-0.0.10 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate prexcl 0.0.10 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate prexcl 0.0.10 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prexcl 0.0.10
[INFO] finished tweaking crates.io crate prexcl 0.0.10
[INFO] tweaked toml for crates.io crate prexcl 0.0.10 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9611e05ebbab3e873a140399dbf68b1c62977917a759763c51ca67ac1f44672
[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" "a9611e05ebbab3e873a140399dbf68b1c62977917a759763c51ca67ac1f44672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9611e05ebbab3e873a140399dbf68b1c62977917a759763c51ca67ac1f44672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9611e05ebbab3e873a140399dbf68b1c62977917a759763c51ca67ac1f44672", kill_on_drop: false }`
[INFO] [stdout] a9611e05ebbab3e873a140399dbf68b1c62977917a759763c51ca67ac1f44672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d8598d1b6016d55418e86a2889507bab0e965cc0840544e7af677c116de7dd6
[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" "9d8598d1b6016d55418e86a2889507bab0e965cc0840544e7af677c116de7dd6", kill_on_drop: false }`
[INFO] [stderr]     Checking prexcl v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |   commands: HashMap<&'static str, Rc<Command>>,
[INFO] [stdout]    |                                      ^^^^^^^ help: use `dyn`: `dyn Command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 | impl std::fmt::Debug for Command {
[INFO] [stdout]    |                          ^^^^^^^ help: use `dyn`: `dyn Command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |   commands: HashMap<&'static str, Rc<Command>>,
[INFO] [stdout]    |                                      ^^^^^^^ help: use `dyn`: `dyn Command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:96:26
[INFO] [stdout]    |
[INFO] [stdout] 96 | impl std::fmt::Debug for Command {
[INFO] [stdout]    |                          ^^^^^^^ help: use `dyn`: `dyn Command`
[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: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:15:63
[INFO] [stdout]    |
[INFO] [stdout] 15 |       Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stdout]    |                                                               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[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/main.rs:20:65
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[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/main.rs:15:63
[INFO] [stdout]    |
[INFO] [stdout] 15 |       Err(why) => panic!("couldn't open {}: {}", display, why.description()),
[INFO] [stdout]    |                                                               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[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/main.rs:20:65
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Err(why) => panic!("couldn't read {}: {}", display, why.description()),
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^
[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 0.61s
[INFO] running `Command { std: "docker" "inspect" "9d8598d1b6016d55418e86a2889507bab0e965cc0840544e7af677c116de7dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d8598d1b6016d55418e86a2889507bab0e965cc0840544e7af677c116de7dd6", kill_on_drop: false }`
[INFO] [stdout] 9d8598d1b6016d55418e86a2889507bab0e965cc0840544e7af677c116de7dd6