[INFO] cloning repository https://github.com/to-json/testchamber
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/to-json/testchamber" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fto-json%2Ftestchamber", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fto-json%2Ftestchamber'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ed7aa4837d8aa2cc978a19cb4799a40493c0c79
[INFO] checking to-json/testchamber against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fto-json%2Ftestchamber" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/to-json/testchamber
[INFO] finished tweaking git repo https://github.com/to-json/testchamber
[INFO] tweaked toml for git repo https://github.com/to-json/testchamber written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/to-json/testchamber 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/to-json/testchamber 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/libseccomp-rs/libseccomp-rs.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anstyle-parse v0.2.1
[INFO] [stderr]   Downloaded anstyle v1.0.1
[INFO] [stderr]   Downloaded clap v4.3.23
[INFO] [stderr]   Downloaded anstyle-wincon v1.0.2
[INFO] [stderr]   Downloaded clap_derive v4.3.12
[INFO] [stderr]   Downloaded proptest-derive v0.3.0
[INFO] [stderr]   Downloaded serde v1.0.185
[INFO] [stderr]   Downloaded proptest v1.2.0
[INFO] [stderr]   Downloaded clap_builder v4.3.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 2e7af11e9ad2e5e3e61b32a4758027ba41e327a8eedb90eff980452ecb138335
[INFO] running `Command { std: "docker" "start" "-a" "2e7af11e9ad2e5e3e61b32a4758027ba41e327a8eedb90eff980452ecb138335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e7af11e9ad2e5e3e61b32a4758027ba41e327a8eedb90eff980452ecb138335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7af11e9ad2e5e3e61b32a4758027ba41e327a8eedb90eff980452ecb138335", kill_on_drop: false }`
[INFO] [stdout] 2e7af11e9ad2e5e3e61b32a4758027ba41e327a8eedb90eff980452ecb138335
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 2158f42d10f215a15c505e0eafb152d902f51b91cac83b9c820c4c758ea8577f
[INFO] running `Command { std: "docker" "start" "-a" "2158f42d10f215a15c505e0eafb152d902f51b91cac83b9c820c4c758ea8577f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]     Checking linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]     Checking anstyle-parse v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking fastrand v2.0.0
[INFO] [stderr]     Checking anstyle v1.0.1
[INFO] [stderr]    Compiling serde v1.0.185
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling libseccomp-sys v0.2.1 (https://github.com/libseccomp-rs/libseccomp-rs.git#c32c2113)
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking clap_lex v0.5.0
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling libseccomp v0.3.0 (https://github.com/libseccomp-rs/libseccomp-rs.git#c32c2113)
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking tempfile v3.8.0
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.3.23
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v1.2.0
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]    Compiling proptest-derive v0.3.0
[INFO] [stderr]     Checking clap v4.3.23
[INFO] [stderr]     Checking testchamber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 `testchamber` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2158f42d10f215a15c505e0eafb152d902f51b91cac83b9c820c4c758ea8577f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2158f42d10f215a15c505e0eafb152d902f51b91cac83b9c820c4c758ea8577f", kill_on_drop: false }`
[INFO] [stdout] 2158f42d10f215a15c505e0eafb152d902f51b91cac83b9c820c4c758ea8577f
