[INFO] fetching crate metalssh 0.0.1...
[INFO] checking metalssh-0.0.1 against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-1
[INFO] extracting crate metalssh 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate metalssh 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate metalssh 0.0.1
[INFO] tweaked toml for crates.io crate metalssh 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate metalssh 0.0.1 on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate metalssh 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 165aaa36a3f08c20430a6d970b73e397137b59cce58d3203a5e934373d7dd887
[INFO] running `Command { std: "docker" "start" "-a" "165aaa36a3f08c20430a6d970b73e397137b59cce58d3203a5e934373d7dd887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "165aaa36a3f08c20430a6d970b73e397137b59cce58d3203a5e934373d7dd887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "165aaa36a3f08c20430a6d970b73e397137b59cce58d3203a5e934373d7dd887", kill_on_drop: false }`
[INFO] [stdout] 165aaa36a3f08c20430a6d970b73e397137b59cce58d3203a5e934373d7dd887
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4f53c5338b1a7553ba52d1cd76fca20a741722ce8e6218b6ac5f1bba2ae80bf
[INFO] running `Command { std: "docker" "start" "-a" "b4f53c5338b1a7553ba52d1cd76fca20a741722ce8e6218b6ac5f1bba2ae80bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.22
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[INFO] [stderr]     Checking metalssh v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:6:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:10:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:12:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stdout] error[E0635]: unknown feature `slice_as_array`
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_as_array)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `array_as_slice`
[INFO] [stdout]   |
[INFO] [stdout] 4 - #![feature(slice_as_array)]
[INFO] [stdout] 4 + #![feature(array_as_slice)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metalssh` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0635]: unknown feature `slice_as_array`
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_as_array)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `array_as_slice`
[INFO] [stdout]   |
[INFO] [stdout] 4 - #![feature(slice_as_array)]
[INFO] [stdout] 4 + #![feature(array_as_slice)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:6:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:10:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stderr] [FMTARGS] {"crate":"metalssh","loc":"src/types/error.rs:12:12","p":1,"ph":1,"wa":0,"pa":0,"a":1,"pos":0,"named":0,"cap":1,"ucap":1,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metalssh` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b4f53c5338b1a7553ba52d1cd76fca20a741722ce8e6218b6ac5f1bba2ae80bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4f53c5338b1a7553ba52d1cd76fca20a741722ce8e6218b6ac5f1bba2ae80bf", kill_on_drop: false }`
[INFO] [stdout] b4f53c5338b1a7553ba52d1cd76fca20a741722ce8e6218b6ac5f1bba2ae80bf