[INFO] fetching crate async-mailer-core 0.3.4...
[INFO] checking async-mailer-core-0.3.4 against master#fc5af1813307d25a84d633f21e2e53c9376eb547 for pr-144386
[INFO] extracting crate async-mailer-core 0.3.4 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate async-mailer-core 0.3.4
[INFO] finished tweaking crates.io crate async-mailer-core 0.3.4
[INFO] tweaked toml for crates.io crate async-mailer-core 0.3.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-mailer-core 0.3.4 on toolchain fc5af1813307d25a84d633f21e2e53c9376eb547
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "generate-lockfile" "--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]      Locking 67 packages to latest compatible versions
[INFO] [stderr]       Adding mail-send v0.4.9 (available: v0.5.1)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a3d6ab6f0df82728d6642655224ecc8d642cc99ebe230463f8cd0e1ba61fa65
[INFO] running `Command { std: "docker" "start" "-a" "5a3d6ab6f0df82728d6642655224ecc8d642cc99ebe230463f8cd0e1ba61fa65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a3d6ab6f0df82728d6642655224ecc8d642cc99ebe230463f8cd0e1ba61fa65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3d6ab6f0df82728d6642655224ecc8d642cc99ebe230463f8cd0e1ba61fa65", kill_on_drop: false }`
[INFO] [stdout] 5a3d6ab6f0df82728d6642655224ecc8d642cc99ebe230463f8cd0e1ba61fa65
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+fc5af1813307d25a84d633f21e2e53c9376eb547" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd287a661436783611d5c9d51d23f14f94a516a5fb40edc8ab4c56ebd0cc5ca7
[INFO] running `Command { std: "docker" "start" "-a" "fd287a661436783611d5c9d51d23f14f94a516a5fb40edc8ab4c56ebd0cc5ca7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling rustls v0.23.29
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking smtp-proto v0.1.6
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking rustls-pki-types v1.12.0
[INFO] [stderr]     Checking rustls-webpki v0.103.4
[INFO] [stderr]     Checking webpki-roots v1.0.2
[INFO] [stderr]     Checking webpki-roots v0.26.11
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking gethostname v0.4.3
[INFO] [stderr]     Checking mail-builder v0.3.2
[INFO] [stderr]     Checking tokio v1.46.1
[INFO] [stderr]     Checking tokio-rustls v0.26.2
[INFO] [stderr]     Checking mail-send v0.4.9
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/opt/rustwide/target/debug/deps/rmetaEyt0vr"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fd287a661436783611d5c9d51d23f14f94a516a5fb40edc8ab4c56ebd0cc5ca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd287a661436783611d5c9d51d23f14f94a516a5fb40edc8ab4c56ebd0cc5ca7", kill_on_drop: false }`
[INFO] [stdout] fd287a661436783611d5c9d51d23f14f94a516a5fb40edc8ab4c56ebd0cc5ca7