[INFO] fetching crate memstream 0.0.1... [INFO] testing memstream-0.0.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8 [INFO] extracting crate memstream 0.0.1 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate memstream 0.0.1 [INFO] finished tweaking crates.io crate memstream 0.0.1 [INFO] tweaked toml for crates.io crate memstream 0.0.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate memstream 0.0.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 16f6af80afe84b76b8fbd3f9b2e7b748069fe83820b32c24023da59562557301 [INFO] running `Command { std: "docker" "start" "-a" "16f6af80afe84b76b8fbd3f9b2e7b748069fe83820b32c24023da59562557301", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "16f6af80afe84b76b8fbd3f9b2e7b748069fe83820b32c24023da59562557301", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16f6af80afe84b76b8fbd3f9b2e7b748069fe83820b32c24023da59562557301", kill_on_drop: false }` [INFO] [stdout] 16f6af80afe84b76b8fbd3f9b2e7b748069fe83820b32c24023da59562557301 [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 28642251faf40d74438c30bc9528cdbb33b84e2574a102fc4e3e23732e8bac89 [INFO] running `Command { std: "docker" "start" "-a" "28642251faf40d74438c30bc9528cdbb33b84e2574a102fc4e3e23732e8bac89", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling memstream v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unknown lint: `missing_doc` [INFO] [stdout] --> src/lib.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(missing_doc)] [INFO] [stdout] | ^^^^^^^^^^^ help: did you mean: `missing_docs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unknown_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s [INFO] running `Command { std: "docker" "inspect" "28642251faf40d74438c30bc9528cdbb33b84e2574a102fc4e3e23732e8bac89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "28642251faf40d74438c30bc9528cdbb33b84e2574a102fc4e3e23732e8bac89", kill_on_drop: false }` [INFO] [stdout] 28642251faf40d74438c30bc9528cdbb33b84e2574a102fc4e3e23732e8bac89 [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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 939616cb6ea0bf15d0cee7e45eefa6e266c7bec7ffba599bf18ff4ad7f046efe [INFO] running `Command { std: "docker" "start" "-a" "939616cb6ea0bf15d0cee7e45eefa6e266c7bec7ffba599bf18ff4ad7f046efe", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stdout] warning: unknown lint: `missing_doc` [INFO] [stdout] --> src/lib.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(missing_doc)] [INFO] [stdout] | ^^^^^^^^^^^ help: did you mean: `missing_docs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unknown_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling memstream v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unknown lint: `missing_doc` [INFO] [stdout] --> src/lib.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(missing_doc)] [INFO] [stdout] | ^^^^^^^^^^^ help: did you mean: `missing_docs` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unknown_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `test` [INFO] [stdout] --> src/lib.rs:73:5 [INFO] [stdout] | [INFO] [stdout] 73 | extern crate test; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #50297 for more information [INFO] [stdout] = help: add `#![feature(test)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-11-06; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `write` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:79:16 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `write` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 79 | stream.write([0, 1, 2, 3]).unwrap(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1724:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Write` which provides `write` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Write; [INFO] [stdout] | [INFO] [stdout] help: there is a method `write_all` with a similar name [INFO] [stdout] | [INFO] [stdout] 79 | stream.write_all([0, 1, 2, 3]).unwrap(); [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `write` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:80:16 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `write` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 80 | stream.write([4, 5, 6, 7]).unwrap(); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1724:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Write` which provides `write` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Write; [INFO] [stdout] | [INFO] [stdout] help: there is a method `write_all` with a similar name [INFO] [stdout] | [INFO] [stdout] 80 | stream.write_all([4, 5, 6, 7]).unwrap(); [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:84:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `read` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 84 | assert_eq!(stream.read(buf), Ok(0)); [INFO] [stdout] | ^^^^ method not found in `MemStream` [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:813:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Read` which provides `read` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Read; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:86:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `read` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 86 | assert_eq!(stream.read(buf), Ok(1)); [INFO] [stdout] | ^^^^ method not found in `MemStream` [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:813:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Read` which provides `read` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Read; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/lib.rs:89:27 [INFO] [stdout] | [INFO] [stdout] 89 | let mut buf = [0, ..4]; [INFO] [stdout] | ^^^ expected integer, found `RangeTo<{integer}>` [INFO] [stdout] | [INFO] [stdout] = note: expected type `{integer}` [INFO] [stdout] found struct `RangeTo<{integer}>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:90:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `read` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 90 | assert_eq!(stream.read(buf), Ok(4)); [INFO] [stdout] | ^^^^ method not found in `MemStream` [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:813:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Read` which provides `read` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Read; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:93:27 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `read` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 93 | assert_eq!(stream.read(buf), Ok(3)); [INFO] [stdout] | ^^^^ method not found in `MemStream` [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:813:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Read` which provides `read` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Read; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `read` found for struct `MemStream` in the current scope [INFO] [stdout] --> src/lib.rs:96:24 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct MemStream { [INFO] [stdout] | -------------------- method `read` not found for this struct [INFO] [stdout] ... [INFO] [stdout] 96 | assert!(stream.read(buf).is_err()); [INFO] [stdout] | ^^^^ method not found in `MemStream` [INFO] [stdout] | [INFO] [stdout] --> /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:813:7 [INFO] [stdout] | [INFO] [stdout] = note: the method is available for `MemStream` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: trait `Read` which provides `read` is implemented but not in scope; perhaps you want to import it [INFO] [stdout] | [INFO] [stdout] 73 + use std::io::Read; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0599, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `memstream` (lib test) due to 9 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "939616cb6ea0bf15d0cee7e45eefa6e266c7bec7ffba599bf18ff4ad7f046efe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "939616cb6ea0bf15d0cee7e45eefa6e266c7bec7ffba599bf18ff4ad7f046efe", kill_on_drop: false }` [INFO] [stdout] 939616cb6ea0bf15d0cee7e45eefa6e266c7bec7ffba599bf18ff4ad7f046efe