[INFO] cloning repository https://github.com/kRITZCREEK/siml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kRITZCREEK/siml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fsiml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fsiml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff04497314a75b789b4deefc25de9147eae7cb06
[INFO] checking kRITZCREEK/siml against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkRITZCREEK%2Fsiml" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kRITZCREEK/siml on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kRITZCREEK/siml
[INFO] finished tweaking git repo https://github.com/kRITZCREEK/siml
[INFO] tweaked toml for git repo https://github.com/kRITZCREEK/siml written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kRITZCREEK/siml 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" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] feb799b5a635e812d0f36fad6e17c038edf9081a97bee54280d6e68088d72b25
[INFO] running `Command { std: "docker" "start" "-a" "feb799b5a635e812d0f36fad6e17c038edf9081a97bee54280d6e68088d72b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "feb799b5a635e812d0f36fad6e17c038edf9081a97bee54280d6e68088d72b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feb799b5a635e812d0f36fad6e17c038edf9081a97bee54280d6e68088d72b25", kill_on_drop: false }`
[INFO] [stdout] feb799b5a635e812d0f36fad6e17c038edf9081a97bee54280d6e68088d72b25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f04a2c2f2424dd907b8760e65e8463dfacfd80ebedd73622d6712114b7727a6c
[INFO] running `Command { std: "docker" "start" "-a" "f04a2c2f2424dd907b8760e65e8463dfacfd80ebedd73622d6712114b7727a6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.8
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]     Checking rgb v0.8.36
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling wabt-sys v0.6.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling lalrpop-util v0.17.1
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking typed-arena v1.4.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]     Checking wasmi v0.5.0
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout]     | |                          -------- temporary value created here
[INFO] [stdout] ...   |
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[INFO] [stdout]     | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 594 | |             Doc::Space => &Doc::Space,
[INFO] [stdout]     | |                            ---------- temporary value created here
[INFO] [stdout] 595 | |             Doc::Newline => &Doc::Newline,
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[INFO] [stdout]     | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/pretty-0.5.2/src/lib.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 | /         RefDoc(match doc {
[INFO] [stdout] 591 | |             // Return 'static references for unit variants to save a small
[INFO] [stdout] 592 | |             // amount of space in the arena
[INFO] [stdout] 593 | |             Doc::Nil => &Doc::Nil,
[INFO] [stdout] 594 | |             Doc::Space => &Doc::Space,
[INFO] [stdout] 595 | |             Doc::Newline => &Doc::Newline,
[INFO] [stdout]     | |                              ------------ temporary value created here
[INFO] [stdout] 596 | |             _ => Arena::alloc(self, doc),
[INFO] [stdout] 597 | |         })
[INFO] [stdout]     | |__________^ returns a value referencing data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pretty` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f04a2c2f2424dd907b8760e65e8463dfacfd80ebedd73622d6712114b7727a6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f04a2c2f2424dd907b8760e65e8463dfacfd80ebedd73622d6712114b7727a6c", kill_on_drop: false }`
[INFO] [stdout] f04a2c2f2424dd907b8760e65e8463dfacfd80ebedd73622d6712114b7727a6c