[INFO] cloning repository https://github.com/cellfusion/rust-v8-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cellfusion/rust-v8-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcellfusion%2Frust-v8-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcellfusion%2Frust-v8-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6aebbb845dc99b48c09b5e56fc79354c43686303
[INFO] checking cellfusion/rust-v8-sample against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcellfusion%2Frust-v8-sample" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cellfusion/rust-v8-sample on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cellfusion/rust-v8-sample
[INFO] finished tweaking git repo https://github.com/cellfusion/rust-v8-sample
[INFO] tweaked toml for git repo https://github.com/cellfusion/rust-v8-sample written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cellfusion/rust-v8-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.21
[INFO] [stderr]   Downloaded cargo_gn v0.0.15
[INFO] [stderr]   Downloaded syn v1.0.41
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded rusty_v8 v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51366c72621c083ff52d0d46d65f3498044d9715f59d0af685998cf6357ddc44
[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" "51366c72621c083ff52d0d46d65f3498044d9715f59d0af685998cf6357ddc44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51366c72621c083ff52d0d46d65f3498044d9715f59d0af685998cf6357ddc44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51366c72621c083ff52d0d46d65f3498044d9715f59d0af685998cf6357ddc44", kill_on_drop: false }`
[INFO] [stdout] 51366c72621c083ff52d0d46d65f3498044d9715f59d0af685998cf6357ddc44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 346d09c36dad48af3c4a58924001921ff8bbf58bbd4de9d3e4f092b260ad5f4d
[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" "346d09c36dad48af3c4a58924001921ff8bbf58bbd4de9d3e4f092b260ad5f4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling rusty_v8 v0.8.1
[INFO] [stderr]     Checking rust-v8-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ContextScope`, `Isolate`, `Object`, `Script`, `Value`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self as v8, Context, ContextScope, Function, FunctionCallback, FunctionCallbackArguments,
[INFO] [stdout]   |                          ^^^^^^^^^^^^
[INFO] [stdout] 3 |     HandleScope, Integer, Isolate, Local, MapFnTo, Object, ReturnValue, Script, Value,
[INFO] [stdout]   |                           ^^^^^^^                  ^^^^^^               ^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ContextScope`, `Isolate`, `Object`, `Script`, `Value`
[INFO] [stdout]  --> src/main.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self as v8, Context, ContextScope, Function, FunctionCallback, FunctionCallbackArguments,
[INFO] [stdout]   |                          ^^^^^^^^^^^^
[INFO] [stdout] 3 |     HandleScope, Integer, Isolate, Local, MapFnTo, Object, ReturnValue, Script, Value,
[INFO] [stdout]   |                           ^^^^^^^                  ^^^^^^               ^^^^^^  ^^^^^
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.96s
[INFO] running `Command { std: "docker" "inspect" "346d09c36dad48af3c4a58924001921ff8bbf58bbd4de9d3e4f092b260ad5f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "346d09c36dad48af3c4a58924001921ff8bbf58bbd4de9d3e4f092b260ad5f4d", kill_on_drop: false }`
[INFO] [stdout] 346d09c36dad48af3c4a58924001921ff8bbf58bbd4de9d3e4f092b260ad5f4d