[INFO] cloning repository https://github.com/ebobrow/ream
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ebobrow/ream" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Fream", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Fream'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f570ac5065895ea31d660fcb6d050163d761c599
[INFO] checking ebobrow/ream against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febobrow%2Fream" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ebobrow/ream
[INFO] finished tweaking git repo https://github.com/ebobrow/ream
[INFO] tweaked toml for git repo https://github.com/ebobrow/ream written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ebobrow/ream 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/ebobrow/ream 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 sparsevec v0.2.2
[INFO] [stderr]   Downloaded cfgrammar v0.13.10
[INFO] [stderr]   Downloaded cactus v1.0.7
[INFO] [stderr]   Downloaded lrtable v0.13.10
[INFO] [stderr]   Downloaded packedvec v1.2.5
[INFO] [stderr]   Downloaded vob v3.0.4
[INFO] [stderr]   Downloaded vergen v8.3.2
[INFO] [stderr]   Downloaded lrlex v0.13.10
[INFO] [stderr]   Downloaded lrpar v0.13.10
[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] de74917f80d434ebc8c638f4702641aff92069968ebb370448a81c23c1d059d4
[INFO] running `Command { std: "docker" "start" "-a" "de74917f80d434ebc8c638f4702641aff92069968ebb370448a81c23c1d059d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de74917f80d434ebc8c638f4702641aff92069968ebb370448a81c23c1d059d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de74917f80d434ebc8c638f4702641aff92069968ebb370448a81c23c1d059d4", kill_on_drop: false }`
[INFO] [stdout] de74917f80d434ebc8c638f4702641aff92069968ebb370448a81c23c1d059d4
[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] a9257e4e5c0770a4b6f4d1260a0201bf169aaddaf32310b7335d0c3f11624275
[INFO] running `Command { std: "docker" "start" "-a" "a9257e4e5c0770a4b6f4d1260a0201bf169aaddaf32310b7335d0c3f11624275", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling deranged v0.4.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling vergen v8.3.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling cactus v1.0.7
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling time v0.3.41
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling lrpar v0.13.10
[INFO] [stderr]    Compiling lrlex v0.13.10
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking vob v3.0.4
[INFO] [stderr]     Checking packedvec v1.2.5
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking sparsevec v0.2.2
[INFO] [stderr]     Checking cfgrammar v0.13.10
[INFO] [stderr]    Compiling lrtable v0.13.10
[INFO] [stderr]    Compiling ream 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(mapped_lock_guards)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(mapped_lock_guards)]
[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 `ream` (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 `ream` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a9257e4e5c0770a4b6f4d1260a0201bf169aaddaf32310b7335d0c3f11624275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9257e4e5c0770a4b6f4d1260a0201bf169aaddaf32310b7335d0c3f11624275", kill_on_drop: false }`
[INFO] [stdout] a9257e4e5c0770a4b6f4d1260a0201bf169aaddaf32310b7335d0c3f11624275
