[INFO] fetching crate oasis-game-contract 0.9.1...
[INFO] checking oasis-game-contract-0.9.1 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate oasis-game-contract 0.9.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate oasis-game-contract 0.9.1 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate oasis-game-contract 0.9.1
[INFO] finished tweaking crates.io crate oasis-game-contract 0.9.1
[INFO] tweaked toml for crates.io crate oasis-game-contract 0.9.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16af2c43ea4121f47c9c7351c2233a45df558032e6d674be1e8a3b53879e800d
[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" "16af2c43ea4121f47c9c7351c2233a45df558032e6d674be1e8a3b53879e800d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16af2c43ea4121f47c9c7351c2233a45df558032e6d674be1e8a3b53879e800d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16af2c43ea4121f47c9c7351c2233a45df558032e6d674be1e8a3b53879e800d", kill_on_drop: false }`
[INFO] [stdout] 16af2c43ea4121f47c9c7351c2233a45df558032e6d674be1e8a3b53879e800d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86ba3f732e13f9c23b86400e7db811765dc97064f7c45b42eaab944693247efb
[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" "86ba3f732e13f9c23b86400e7db811765dc97064f7c45b42eaab944693247efb", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling uint v0.3.0
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking bigint v4.4.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking parity-hash v1.2.2
[INFO] [stderr]     Checking owasm-std v0.13.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/owasm-std-0.13.0/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(link_args)]
[INFO] [stdout]   |            ^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of using `-C link-arg=ARG` on command line, which is available from cargo build scripts with `cargo:rustc-link-arg` now
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `owasm-std`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "86ba3f732e13f9c23b86400e7db811765dc97064f7c45b42eaab944693247efb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86ba3f732e13f9c23b86400e7db811765dc97064f7c45b42eaab944693247efb", kill_on_drop: false }`
[INFO] [stdout] 86ba3f732e13f9c23b86400e7db811765dc97064f7c45b42eaab944693247efb