[INFO] fetching crate seax_svm 0.2.8...
[INFO] checking seax_svm-0.2.8 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] extracting crate seax_svm 0.2.8 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate seax_svm 0.2.8 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seax_svm 0.2.8
[INFO] finished tweaking crates.io crate seax_svm 0.2.8
[INFO] tweaked toml for crates.io crate seax_svm 0.2.8 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages
[INFO] [stderr]       Adding env_logger v0.8.4 (latest: v0.11.3)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5e1e995f9596300dbe4dbbf05b696a926f1b1fcc57b3b5c8768fc0b2482a447
[INFO] running `Command { std: "docker" "start" "-a" "e5e1e995f9596300dbe4dbbf05b696a926f1b1fcc57b3b5c8768fc0b2482a447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5e1e995f9596300dbe4dbbf05b696a926f1b1fcc57b3b5c8768fc0b2482a447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5e1e995f9596300dbe4dbbf05b696a926f1b1fcc57b3b5c8768fc0b2482a447", kill_on_drop: false }`
[INFO] [stdout] e5e1e995f9596300dbe4dbbf05b696a926f1b1fcc57b3b5c8768fc0b2482a447
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0afa3f5a04c3279f3382cd6b590e68150aa635d088f933fbe43d7a4d8a04f8a
[INFO] running `Command { std: "docker" "start" "-a" "d0afa3f5a04c3279f3382cd6b590e68150aa635d088f933fbe43d7a4d8a04f8a", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]     Checking seax_svm v0.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> src/slist.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn pop(self)            -> Option<(T, Self)>;
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout]    = note: required because it appears within the type `(T, Self)`
[INFO] [stdout] note: required by an implicit `Sized` bound in `Option`
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/option.rs:571:1
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn pop(self)            -> Option<(T, Self)> where Self: Sized;
[INFO] [stdout]    |                                                  +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr] error: could not compile `seax_svm` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d0afa3f5a04c3279f3382cd6b590e68150aa635d088f933fbe43d7a4d8a04f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0afa3f5a04c3279f3382cd6b590e68150aa635d088f933fbe43d7a4d8a04f8a", kill_on_drop: false }`
[INFO] [stdout] d0afa3f5a04c3279f3382cd6b590e68150aa635d088f933fbe43d7a4d8a04f8a