[INFO] fetching crate mstr 0.1.4... [INFO] checking mstr-0.1.4 against master#4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 for pr-134272 [INFO] extracting crate mstr 0.1.4 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate mstr 0.1.4 on toolchain 4847d6a9d07d4be9ba3196f6ad444af2d7bdde72 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mstr 0.1.4 [INFO] finished tweaking crates.io crate mstr 0.1.4 [INFO] tweaked toml for crates.io crate mstr 0.1.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 11 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f951fb61515f2d3c2ccb50ecf4bffa24adb07b357b6e06ff980dcc51feaac6d5 [INFO] running `Command { std: "docker" "start" "-a" "f951fb61515f2d3c2ccb50ecf4bffa24adb07b357b6e06ff980dcc51feaac6d5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f951fb61515f2d3c2ccb50ecf4bffa24adb07b357b6e06ff980dcc51feaac6d5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f951fb61515f2d3c2ccb50ecf4bffa24adb07b357b6e06ff980dcc51feaac6d5", kill_on_drop: false }` [INFO] [stdout] f951fb61515f2d3c2ccb50ecf4bffa24adb07b357b6e06ff980dcc51feaac6d5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+4847d6a9d07d4be9ba3196f6ad444af2d7bdde72" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9aeb4b828846248853b819db55a74c6a8d1acf2880bf102433333dd7e8d28d36 [INFO] running `Command { std: "docker" "start" "-a" "9aeb4b828846248853b819db55a74c6a8d1acf2880bf102433333dd7e8d28d36", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.216 [INFO] [stderr] Compiling serde_json v1.0.133 [INFO] [stderr] Checking ryu v1.0.18 [INFO] [stderr] Checking itoa v1.0.14 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Checking mstr v0.1.4 (/opt/rustwide/workdir) [INFO] [stderr] Checking serde_test v1.0.177 [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `alloc::string::String` will be dropped [INFO] [stdout] --> src/lib.rs:922:39 [INFO] [stdout] | [INFO] [stdout] 922 | assert_eq!(mstr.into_string().as_ptr(), ptr); [INFO] [stdout] | ------------------ ^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `alloc::string::String` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_ptr` the `alloc::string::String` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.02s [INFO] running `Command { std: "docker" "inspect" "9aeb4b828846248853b819db55a74c6a8d1acf2880bf102433333dd7e8d28d36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9aeb4b828846248853b819db55a74c6a8d1acf2880bf102433333dd7e8d28d36", kill_on_drop: false }` [INFO] [stdout] 9aeb4b828846248853b819db55a74c6a8d1acf2880bf102433333dd7e8d28d36