[INFO] fetching crate ssandbox 0.1.0...
[INFO] checking ssandbox-0.1.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate ssandbox 0.1.0 into /workspace/builds/worker-109/source
[INFO] validating manifest of crates.io crate ssandbox 0.1.0 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 crates.io crate ssandbox 0.1.0
[INFO] finished tweaking crates.io crate ssandbox 0.1.0
[INFO] tweaked toml for crates.io crate ssandbox 0.1.0 written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate crates.io crate ssandbox 0.1.0 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 caps v0.5.1
[INFO] [stderr]   Downloaded cgroups-rs v0.2.3
[INFO] [stderr]   Downloaded libscmp v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 70ab0b581661b86d4e3f1336c7d14cd82aff7978088b97c0228b9fe573b6d3c0
[INFO] running `Command { std: "docker" "start" "-a" "70ab0b581661b86d4e3f1336c7d14cd82aff7978088b97c0228b9fe573b6d3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70ab0b581661b86d4e3f1336c7d14cd82aff7978088b97c0228b9fe573b6d3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ab0b581661b86d4e3f1336c7d14cd82aff7978088b97c0228b9fe573b6d3c0", kill_on_drop: false }`
[INFO] [stdout] 70ab0b581661b86d4e3f1336c7d14cd82aff7978088b97c0228b9fe573b6d3c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 828ebc1aa64df57d8f3fbb9d17fc016c5cba5a2e70c5d68ea7c17547281be577
[INFO] running `Command { std: "docker" "start" "-a" "828ebc1aa64df57d8f3fbb9d17fc016c5cba5a2e70c5d68ea7c17547281be577", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling libscmp v0.1.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking cgroups-rs v0.2.3
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking caps v0.5.1
[INFO] [stderr]     Checking ssandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `error_code`
[INFO] [stdout]   --> src/container/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     error_code: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `additional_info`
[INFO] [stdout]   --> src/container/error.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     additional_info: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `error_code`
[INFO] [stdout]   --> src/container/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     error_code: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `additional_info`
[INFO] [stdout]   --> src/container/error.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     additional_info: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.51s
[INFO] running `Command { std: "docker" "inspect" "828ebc1aa64df57d8f3fbb9d17fc016c5cba5a2e70c5d68ea7c17547281be577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "828ebc1aa64df57d8f3fbb9d17fc016c5cba5a2e70c5d68ea7c17547281be577", kill_on_drop: false }`
[INFO] [stdout] 828ebc1aa64df57d8f3fbb9d17fc016c5cba5a2e70c5d68ea7c17547281be577