[INFO] cloning repository https://github.com/Voultapher/sort-research-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Voultapher/sort-research-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-research-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-research-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d3eae46244e527554a302dce8358966d1cf7f22
[INFO] checking Voultapher/sort-research-rs against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-research-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Voultapher/sort-research-rs
[INFO] finished tweaking git repo https://github.com/Voultapher/sort-research-rs
[INFO] tweaked toml for git repo https://github.com/Voultapher/sort-research-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Voultapher/sort-research-rs on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Voultapher/sort-research-rs 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Voultapher/driftsort`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded introsort v0.6.0
[INFO] [stderr]   Downloaded core_affinity v0.7.6
[INFO] [stderr]   Downloaded zipf v7.0.0
[INFO] [stderr]   Downloaded rayon-core v1.10.2
[INFO] [stderr]   Downloaded dmsort v1.0.2
[INFO] [stderr]   Downloaded crumsort v0.1.0
[INFO] [stderr]   Downloaded tiny_sort v1.0.1
[INFO] [stderr]   Downloaded glidesort v0.1.2
[INFO] [stderr]   Downloaded serde_json v1.0.93
[INFO] [stderr]   Downloaded afsort v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 929c059b79b90fecd414466e0eaf6d6ed5672adf86a26f853e5ec28c5ad3952f
[INFO] running `Command { std: "docker" "start" "-a" "929c059b79b90fecd414466e0eaf6d6ed5672adf86a26f853e5ec28c5ad3952f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "929c059b79b90fecd414466e0eaf6d6ed5672adf86a26f853e5ec28c5ad3952f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "929c059b79b90fecd414466e0eaf6d6ed5672adf86a26f853e5ec28c5ad3952f", kill_on_drop: false }`
[INFO] [stdout] 929c059b79b90fecd414466e0eaf6d6ed5672adf86a26f853e5ec28c5ad3952f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e42fe1890425af905abbfb479e8a9afe6b1d970ed262f413f0341e920126512c
[INFO] running `Command { std: "docker" "start" "-a" "e42fe1890425af905abbfb479e8a9afe6b1d970ed262f413f0341e920126512c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling paste v1.0.11
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking plotters v0.3.4
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]     Checking zipf v7.0.0
[INFO] [stderr]     Checking sort_test_tools v0.1.0 (/opt/rustwide/workdir/sort_test_tools)
[INFO] [stderr]    Compiling sort_research_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> sort_test_tools/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_metavar_expr_concat)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ipnsort v0.1.0 (/opt/rustwide/workdir/ipnsort)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> ipnsort/src/lib.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / #![feature(
[INFO] [stdout]  4 | |     ptr_sub_ptr,
[INFO] [stdout]  5 | |     auto_traits,
[INFO] [stdout]  6 | |     negative_impls,
[INFO] [stdout] ...  |
[INFO] [stdout] 10 | |     const_mut_refs
[INFO] [stdout] 11 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_mut_refs` has been stable since `1.83.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicode-ident v1.0.6
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipnsort` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sort_test_tools` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e42fe1890425af905abbfb479e8a9afe6b1d970ed262f413f0341e920126512c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e42fe1890425af905abbfb479e8a9afe6b1d970ed262f413f0341e920126512c", kill_on_drop: false }`
[INFO] [stdout] e42fe1890425af905abbfb479e8a9afe6b1d970ed262f413f0341e920126512c