[INFO] fetching crate gameshell 0.4.1...
[INFO] checking gameshell-0.4.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate gameshell 0.4.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate gameshell 0.4.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gameshell 0.4.1
[INFO] finished tweaking crates.io crate gameshell 0.4.1
[INFO] tweaked toml for crates.io crate gameshell 0.4.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 96 packages
[INFO] [stderr]       Adding base64 v0.11.0 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding criterion v0.3.6 (latest: v0.5.1)
[INFO] [stderr]       Adding criterion-plot v0.4.5 (latest: v0.5.0)
[INFO] [stderr]       Adding crossbeam-channel v0.4.4 (latest: v0.5.12)
[INFO] [stderr]       Adding crossbeam-utils v0.7.2 (latest: v0.8.19)
[INFO] [stderr]       Adding env_logger v0.7.1 (latest: v0.11.3)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding mio v0.6.23 (latest: v0.8.11)
[INFO] [stderr]       Adding miow v0.2.2 (latest: v0.6.0)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding quickcheck v0.9.2 (latest: v1.0.3)
[INFO] [stderr]       Adding quickcheck_macros v0.9.1 (latest: v1.0.0)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding tokio v0.2.25 (latest: v1.37.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded slog v2.7.0
[INFO] [stderr]   Downloaded cmdmat v0.1.4
[INFO] [stderr]   Downloaded quickcheck v0.9.2
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.4
[INFO] [stderr]   Downloaded metac v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 938a9a902a588ca9c4a7de7badbbc84c8557f682b584ea9c251e5e65c000bbbd
[INFO] running `Command { std: "docker" "start" "-a" "938a9a902a588ca9c4a7de7badbbc84c8557f682b584ea9c251e5e65c000bbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938a9a902a588ca9c4a7de7badbbc84c8557f682b584ea9c251e5e65c000bbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938a9a902a588ca9c4a7de7badbbc84c8557f682b584ea9c251e5e65c000bbbd", kill_on_drop: false }`
[INFO] [stdout] 938a9a902a588ca9c4a7de7badbbc84c8557f682b584ea9c251e5e65c000bbbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d78940dd5de6d18217facb12abfedb9a08006f4757ceda91ce48d1a8cf3d6ce
[INFO] running `Command { std: "docker" "start" "-a" "2d78940dd5de6d18217facb12abfedb9a08006f4757ceda91ce48d1a8cf3d6ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking metac v0.1.1
[INFO] [stderr]     Checking cmdmat v0.1.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking gameshell v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `cmdmat` is imported redundantly
[INFO] [stdout]  --> src/evaluator.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cmdmat::{self, Either, LookError, Mapping, RegError, Spec};
[INFO] [stdout]   |              ^^^^ the item `cmdmat` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stdout] warning: the item `cmdmat` is imported redundantly
[INFO] [stdout]  --> src/evaluator.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use cmdmat::{self, Either, LookError, Mapping, RegError, Spec};
[INFO] [stdout]   |              ^^^^ the item `cmdmat` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.83s
[INFO] running `Command { std: "docker" "inspect" "2d78940dd5de6d18217facb12abfedb9a08006f4757ceda91ce48d1a8cf3d6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d78940dd5de6d18217facb12abfedb9a08006f4757ceda91ce48d1a8cf3d6ce", kill_on_drop: false }`
[INFO] [stdout] 2d78940dd5de6d18217facb12abfedb9a08006f4757ceda91ce48d1a8cf3d6ce