[INFO] fetching crate mag_lang 0.1.0...
[INFO] checking mag_lang-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate mag_lang 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mag_lang 0.1.0
[INFO] finished tweaking crates.io crate mag_lang 0.1.0
[INFO] tweaked toml for crates.io crate mag_lang 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mag_lang 0.1.0 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 mag_lang 0.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.189
[INFO] [stderr]   Downloaded pest_generator v2.7.4
[INFO] [stderr]   Downloaded smallstr v0.2.0
[INFO] [stderr]   Downloaded fastrand v1.7.0
[INFO] [stderr]   Downloaded num-derive v0.4.1
[INFO] [stderr]   Downloaded phf_codegen v0.11.2
[INFO] [stderr]   Downloaded clap_lex v0.1.1
[INFO] [stderr]   Downloaded once_cell v1.10.0
[INFO] [stderr]   Downloaded magc v0.1.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.9.0
[INFO] [stderr]   Downloaded pest_derive v2.7.4
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded indexmap v1.8.1
[INFO] [stderr]   Downloaded pest v2.7.4
[INFO] [stderr]   Downloaded crossterm v0.25.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.9.0
[INFO] [stderr]   Downloaded serde v1.0.189
[INFO] [stderr]   Downloaded textwrap v0.15.0
[INFO] [stderr]   Downloaded mortal v0.2.4
[INFO] [stderr]   Downloaded linefeed v0.6.0
[INFO] [stderr]   Downloaded indicatif v0.16.2
[INFO] [stderr]   Downloaded regex v1.5.5
[INFO] [stderr]   Downloaded syn v1.0.91
[INFO] [stderr]   Downloaded clap v3.1.12
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] [stderr]   Downloaded terminfo v0.8.0
[INFO] [stderr]   Downloaded pest_meta v2.7.4
[INFO] [stderr]   Downloaded zeroize v1.5.5
[INFO] [stderr]   Downloaded dialoguer v0.10.1
[INFO] [stderr]   Downloaded console v0.15.0
[INFO] [stderr]   Downloaded clap_derive v3.1.7
[INFO] [stderr]   Downloaded colored v2.0.0
[INFO] [stderr]   Downloaded getrandom v0.2.6
[INFO] [stderr]   Downloaded strontium v0.6.0
[INFO] [stderr]   Downloaded redox_syscall v0.2.13
[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] 874a62690164767f17143f73002fcceffb490ac0d5ae98eb257dd435d2571a60
[INFO] running `Command { std: "docker" "start" "-a" "874a62690164767f17143f73002fcceffb490ac0d5ae98eb257dd435d2571a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "874a62690164767f17143f73002fcceffb490ac0d5ae98eb257dd435d2571a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "874a62690164767f17143f73002fcceffb490ac0d5ae98eb257dd435d2571a60", kill_on_drop: false }`
[INFO] [stdout] 874a62690164767f17143f73002fcceffb490ac0d5ae98eb257dd435d2571a60
[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] 7ac28eb3192ac9523e232402a339c84dbc705a04cd3ad3a508fc4ce72ec433aa
[INFO] running `Command { std: "docker" "start" "-a" "7ac28eb3192ac9523e232402a339c84dbc705a04cd3ad3a508fc4ce72ec433aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]     Checking smallstr v0.2.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]     Checking zeroize v1.5.5
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling terminfo v0.8.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking dialoguer v0.10.1
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling num-derive v0.4.1
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling pest v2.7.4
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling pest_meta v2.7.4
[INFO] [stderr]     Checking mortal v0.2.4
[INFO] [stderr]     Checking linefeed v0.6.0
[INFO] [stderr]     Checking clap v3.1.12
[INFO] [stderr]    Compiling pest_generator v2.7.4
[INFO] [stderr]    Compiling pest_derive v2.7.4
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking strontium v0.6.0
[INFO] [stderr]     Checking magc v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/magc-0.1.0/src/lib.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![feature(type_ascription)]
[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 `magc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7ac28eb3192ac9523e232402a339c84dbc705a04cd3ad3a508fc4ce72ec433aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac28eb3192ac9523e232402a339c84dbc705a04cd3ad3a508fc4ce72ec433aa", kill_on_drop: false }`
[INFO] [stdout] 7ac28eb3192ac9523e232402a339c84dbc705a04cd3ad3a508fc4ce72ec433aa