[INFO] fetching crate mersenne-twister-m 0.4.1...
[INFO] checking mersenne-twister-m-0.4.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate mersenne-twister-m 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mersenne-twister-m 0.4.1
[INFO] finished tweaking crates.io crate mersenne-twister-m 0.4.1
[INFO] tweaked toml for crates.io crate mersenne-twister-m 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mersenne-twister-m 0.4.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mersenne-twister-m 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3deb4bd4a3c274d7803d8a41c81ad523c96f40bcb18513ee3d21ed21496291d
[INFO] running `Command { std: "docker" "start" "-a" "a3deb4bd4a3c274d7803d8a41c81ad523c96f40bcb18513ee3d21ed21496291d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3deb4bd4a3c274d7803d8a41c81ad523c96f40bcb18513ee3d21ed21496291d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3deb4bd4a3c274d7803d8a41c81ad523c96f40bcb18513ee3d21ed21496291d", kill_on_drop: false }`
[INFO] [stdout] a3deb4bd4a3c274d7803d8a41c81ad523c96f40bcb18513ee3d21ed21496291d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8f54358ca33a6460a358954ad68100309d299597e42758600c1c3c99ba01aa4
[INFO] running `Command { std: "docker" "start" "-a" "f8f54358ca33a6460a358954ad68100309d299597e42758600c1c3c99ba01aa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]     Checking mersenne-twister-m v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> src/mt19937.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 | #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `rand`
[INFO] [stdout]     = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]    --> src/mt19937.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 | #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `feature` are: `rand`
[INFO] [stdout]     = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "f8f54358ca33a6460a358954ad68100309d299597e42758600c1c3c99ba01aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8f54358ca33a6460a358954ad68100309d299597e42758600c1c3c99ba01aa4", kill_on_drop: false }`
[INFO] [stdout] f8f54358ca33a6460a358954ad68100309d299597e42758600c1c3c99ba01aa4