[INFO] fetching crate tr-lang 0.4.0...
[INFO] checking tr-lang-0.4.0 against 1.95.0 for pr-155915
[INFO] extracting crate tr-lang 0.4.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate tr-lang 0.4.0
[INFO] finished tweaking crates.io crate tr-lang 0.4.0
[INFO] tweaked toml for crates.io crate tr-lang 0.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tr-lang 0.4.0 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 crates.io crate tr-lang 0.4.0 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 unicode-width v0.1.9
[INFO] [stderr]   Downloaded proc-macro2 v1.0.36
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded smallvec v1.8.0
[INFO] [stderr]   Downloaded quote v1.0.14
[INFO] [stderr]   Downloaded clipboard-win v4.4.1
[INFO] [stderr]   Downloaded objc-foundation v0.1.1
[INFO] [stderr]   Downloaded objc_id v0.1.1
[INFO] [stderr]   Downloaded redox_users v0.4.0
[INFO] [stderr]   Downloaded errno v0.2.8
[INFO] [stderr]   Downloaded fd-lock v3.0.3
[INFO] [stderr]   Downloaded locale_config v0.3.0
[INFO] [stderr]   Downloaded str-buf v1.0.5
[INFO] [stderr]   Downloaded getrandom v0.2.4
[INFO] [stderr]   Downloaded io-lifetimes v0.4.4
[INFO] [stderr]   Downloaded redox_syscall v0.2.10
[INFO] [stderr]   Downloaded serde_derive v1.0.133
[INFO] [stderr]   Downloaded rustyline v9.1.2
[INFO] [stderr]   Downloaded serde v1.0.133
[INFO] [stderr]   Downloaded aho-corasick v0.7.18
[INFO] [stderr]   Downloaded syn v1.0.85
[INFO] [stderr]   Downloaded regex v1.5.4
[INFO] [stderr]   Downloaded rustix v0.32.1
[INFO] [stderr]   Downloaded nix v0.23.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.25
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.30.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.30.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.30.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.30.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.30.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.37
[INFO] [stderr]   Downloaded windows-sys v0.30.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f8581b48668de1dcfe0dbc10ed8c933d799cbe150f209171720839cbb5c38103
[INFO] running `Command { std: "docker" "start" "-a" "f8581b48668de1dcfe0dbc10ed8c933d799cbe150f209171720839cbb5c38103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8581b48668de1dcfe0dbc10ed8c933d799cbe150f209171720839cbb5c38103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8581b48668de1dcfe0dbc10ed8c933d799cbe150f209171720839cbb5c38103", kill_on_drop: false }`
[INFO] [stdout] f8581b48668de1dcfe0dbc10ed8c933d799cbe150f209171720839cbb5c38103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 65182fc173148cd40b5f68a0446147dbe984c8bcc2927b65f693d5d0f4a149fe
[INFO] running `Command { std: "docker" "start" "-a" "65182fc173148cd40b5f68a0446147dbe984c8bcc2927b65f693d5d0f4a149fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling io-lifetimes v0.4.4
[INFO] [stderr]    Compiling rustix v0.32.1
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking linux-raw-sys v0.0.37
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking fd-lock v3.0.3
[INFO] [stderr]    Compiling tr-lang v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking locale_config v0.3.0
[INFO] [stderr]     Checking rustyline v9.1.2
[INFO] [stderr]     Checking bincode v1.3.3
[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(io_error_more)]
[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(io_error_more)]
[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 `tr-lang` (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 `tr-lang` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "65182fc173148cd40b5f68a0446147dbe984c8bcc2927b65f693d5d0f4a149fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65182fc173148cd40b5f68a0446147dbe984c8bcc2927b65f693d5d0f4a149fe", kill_on_drop: false }`
[INFO] [stdout] 65182fc173148cd40b5f68a0446147dbe984c8bcc2927b65f693d5d0f4a149fe
