[INFO] cloning repository https://github.com/platonvin/containers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/platonvin/containers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplatonvin%2Fcontainers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplatonvin%2Fcontainers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e2fd699ebf43d9e29bfd8ca4e880bbc6103dd3d
[INFO] checking platonvin/containers against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplatonvin%2Fcontainers" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/platonvin/containers
[INFO] finished tweaking git repo https://github.com/platonvin/containers
[INFO] tweaked toml for git repo https://github.com/platonvin/containers written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/platonvin/containers 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/platonvin/containers 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 git repository `https://github.com/platonvin/qvek.git`
[INFO] [stderr]     Updating git repository `https://github.com/platonvin/vek.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest Rust 1.95.0 compatible versions
[INFO] [stderr]       Adding fastrand v2.4.1
[INFO] [stderr]       Adding phf v0.13.1
[INFO] [stderr]       Adding phf_generator v0.13.1
[INFO] [stderr]       Adding phf_macros v0.13.1
[INFO] [stderr]       Adding phf_shared v0.13.1
[INFO] [stderr]       Adding qvek v0.1.2 (https://github.com/platonvin/qvek.git#eefd07d9)
[INFO] [stderr]       Adding qvek_proc v0.1.2 (https://github.com/platonvin/qvek.git#eefd07d9)
[INFO] [stderr]       Adding siphasher v1.0.3
[INFO] [stderr]       Adding vek v0.17.2 (https://github.com/platonvin/vek.git#b4235513)
[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] 0fd46a86e2209e08acc9923de0fc6c1d37790bbf0c454145ff2005bb1aa1be06
[INFO] running `Command { std: "docker" "start" "-a" "0fd46a86e2209e08acc9923de0fc6c1d37790bbf0c454145ff2005bb1aa1be06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fd46a86e2209e08acc9923de0fc6c1d37790bbf0c454145ff2005bb1aa1be06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fd46a86e2209e08acc9923de0fc6c1d37790bbf0c454145ff2005bb1aa1be06", kill_on_drop: false }`
[INFO] [stdout] 0fd46a86e2209e08acc9923de0fc6c1d37790bbf0c454145ff2005bb1aa1be06
[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] 2290354cc752b85cb8f549e48d389bd284198ee5d4d561609c294e6ef74026fe
[INFO] running `Command { std: "docker" "start" "-a" "2290354cc752b85cb8f549e48d389bd284198ee5d4d561609c294e6ef74026fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling phf_shared v0.13.1
[INFO] [stderr]    Compiling vek v0.17.2 (https://github.com/platonvin/vek.git#b4235513)
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling phf_generator v0.13.1
[INFO] [stderr]    Compiling phf v0.13.1
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling phf_macros v0.13.1
[INFO] [stderr]    Compiling qvek_proc v0.1.2 (https://github.com/platonvin/qvek.git#eefd07d9)
[INFO] [stderr]     Checking qvek v0.1.2 (https://github.com/platonvin/qvek.git#eefd07d9)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/qvek-90604accf1a61197/eefd07d/qvek/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_metavar_expr)] // only need it here, not in invoking code
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qvek` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2290354cc752b85cb8f549e48d389bd284198ee5d4d561609c294e6ef74026fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2290354cc752b85cb8f549e48d389bd284198ee5d4d561609c294e6ef74026fe", kill_on_drop: false }`
[INFO] [stdout] 2290354cc752b85cb8f549e48d389bd284198ee5d4d561609c294e6ef74026fe