[INFO] cloning repository https://github.com/VendettaReborn/better-error-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VendettaReborn/better-error-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVendettaReborn%2Fbetter-error-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVendettaReborn%2Fbetter-error-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2f73ca20e0ae3d33c6f5c1422440d7d8e1bade9
[INFO] checking VendettaReborn/better-error-experiment against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVendettaReborn%2Fbetter-error-experiment" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/VendettaReborn/better-error-experiment
[INFO] finished tweaking git repo https://github.com/VendettaReborn/better-error-experiment
[INFO] tweaked toml for git repo https://github.com/VendettaReborn/better-error-experiment written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/VendettaReborn/better-error-experiment 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/VendettaReborn/better-error-experiment 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rustversion v1.0.17
[INFO] [stderr]   Downloaded strum_macros v0.25.3
[INFO] [stderr]   Downloaded strum v0.25.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.86
[INFO] [stderr]   Downloaded snafu-derive v0.8.4
[INFO] [stderr]   Downloaded snafu v0.8.4
[INFO] [stderr]   Downloaded syn v2.0.74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f821ac6deab9476808abd129abd43266ac99dc99acfbaa0b2cb2356cbe14f117
[INFO] running `Command { std: "docker" "start" "-a" "f821ac6deab9476808abd129abd43266ac99dc99acfbaa0b2cb2356cbe14f117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f821ac6deab9476808abd129abd43266ac99dc99acfbaa0b2cb2356cbe14f117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f821ac6deab9476808abd129abd43266ac99dc99acfbaa0b2cb2356cbe14f117", kill_on_drop: false }`
[INFO] [stdout] f821ac6deab9476808abd129abd43266ac99dc99acfbaa0b2cb2356cbe14f117
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 07ddf9a19da154b66b073204ed1600afa8f49968b019909886ef568cea4e3d53
[INFO] running `Command { std: "docker" "start" "-a" "07ddf9a19da154b66b073204ed1600afa8f49968b019909886ef568cea4e3d53", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]     Checking syn v2.0.74
[INFO] [stderr]     Checking stack-error-macro v0.1.0 (/opt/rustwide/workdir/stack-error-macro)
[INFO] [stderr]    Compiling snafu-derive v0.8.4
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]     Checking snafu v0.8.4
[INFO] [stderr]     Checking stack-error v0.1.0 (/opt/rustwide/workdir/stack-error)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> stack-error/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(error_iter)]
[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 `stack-error` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> stack-error/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(error_iter)]
[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 `stack-error` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "07ddf9a19da154b66b073204ed1600afa8f49968b019909886ef568cea4e3d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ddf9a19da154b66b073204ed1600afa8f49968b019909886ef568cea4e3d53", kill_on_drop: false }`
[INFO] [stdout] 07ddf9a19da154b66b073204ed1600afa8f49968b019909886ef568cea4e3d53
