[INFO] fetching crate loveletter 0.2.0...
[INFO] checking loveletter-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate loveletter 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate loveletter 0.2.0
[INFO] finished tweaking crates.io crate loveletter 0.2.0
[INFO] tweaked toml for crates.io crate loveletter 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate loveletter 0.2.0 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 loveletter 0.2.0 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 xshell v0.2.7
[INFO] [stderr]   Downloaded xshell-macros v0.2.7
[INFO] [stderr]   Downloaded ctor-proc-macro v0.0.5
[INFO] [stderr]   Downloaded ctor v0.4.1
[INFO] [stderr]   Downloaded dtor-proc-macro v0.0.5
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded ouroboros v0.18.5
[INFO] [stderr]   Downloaded dtor v0.0.5
[INFO] [stderr]   Downloaded tempfile v3.19.1
[INFO] [stderr]   Downloaded deranged v0.4.1
[INFO] [stderr]   Downloaded ouroboros_macro v0.18.5
[INFO] [stderr]   Downloaded anyhow v1.0.97
[INFO] [stderr]   Downloaded imap-proto v0.16.5
[INFO] [stderr]   Downloaded openssl-sys v0.9.106
[INFO] [stderr]   Downloaded imap v3.0.0-alpha.15
[INFO] [stderr]   Downloaded toml_edit v0.22.24
[INFO] [stderr]   Downloaded hashify v0.2.6
[INFO] [stderr]   Downloaded simplelog v0.12.2
[INFO] [stderr]   Downloaded winnow v0.7.4
[INFO] [stderr]   Downloaded indexmap v2.8.0
[INFO] [stderr]   Downloaded toml v0.8.20
[INFO] [stderr]   Downloaded openssl v0.10.71
[INFO] [stderr]   Downloaded rustix v1.0.3
[INFO] [stderr]   Downloaded mail-parser v0.10.2
[INFO] [stderr]   Downloaded linux-raw-sys v0.9.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e5779c515e20780731a2c187d5212d44f5ef47c099325fba41309124d59217bb
[INFO] running `Command { std: "docker" "start" "-a" "e5779c515e20780731a2c187d5212d44f5ef47c099325fba41309124d59217bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5779c515e20780731a2c187d5212d44f5ef47c099325fba41309124d59217bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5779c515e20780731a2c187d5212d44f5ef47c099325fba41309124d59217bb", kill_on_drop: false }`
[INFO] [stdout] e5779c515e20780731a2c187d5212d44f5ef47c099325fba41309124d59217bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e392d4ec7d48ca842420bb89c780ddb54805589f20ec4a7bc286fa17bd2feeb1
[INFO] running `Command { std: "docker" "start" "-a" "e392d4ec7d48ca842420bb89c780ddb54805589f20ec4a7bc286fa17bd2feeb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking bitflags v2.9.0
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]     Checking once_cell v1.21.1
[INFO] [stderr]    Compiling cc v1.2.16
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking deranged v0.4.1
[INFO] [stderr]     Checking indexmap v2.8.0
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking winnow v0.7.4
[INFO] [stderr]    Compiling time-macros v0.2.22
[INFO] [stderr]     Checking clap_builder v4.5.34
[INFO] [stderr]    Compiling rustix v1.0.3
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling xshell-macros v0.2.7
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking email_address v0.2.9
[INFO] [stderr]     Checking linux-raw-sys v0.9.3
[INFO] [stderr]    Compiling dtor-proc-macro v0.0.5
[INFO] [stderr]    Compiling ctor-proc-macro v0.0.5
[INFO] [stderr]     Checking xshell v0.2.7
[INFO] [stderr]     Checking dtor v0.0.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking ctor v0.4.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking chrono v0.4.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]     Checking imap-proto v0.16.5
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking toml_edit v0.22.24
[INFO] [stderr]     Checking tempfile v3.19.1
[INFO] [stderr]     Checking simplelog v0.12.2
[INFO] [stderr]     Checking toml v0.8.20
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling ouroboros_macro v0.18.5
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling hashify v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking mail-parser v0.10.2
[INFO] [stderr]     Checking clap v4.5.34
[INFO] [stderr]     Checking ouroboros v0.18.5
[INFO] [stderr]     Checking imap v3.0.0-alpha.15
[INFO] [stderr]     Checking loveletter v0.2.0 (/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(pattern)]
[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(pattern)]
[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 `loveletter` (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 `loveletter` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e392d4ec7d48ca842420bb89c780ddb54805589f20ec4a7bc286fa17bd2feeb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e392d4ec7d48ca842420bb89c780ddb54805589f20ec4a7bc286fa17bd2feeb1", kill_on_drop: false }`
[INFO] [stdout] e392d4ec7d48ca842420bb89c780ddb54805589f20ec4a7bc286fa17bd2feeb1
