[INFO] fetching crate slicestring 0.3.3... [INFO] testing slicestring-0.3.3 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1 [INFO] extracting crate slicestring 0.3.3 into /workspace/builds/worker-5-tc1/source [INFO] started tweaking crates.io crate slicestring 0.3.3 [INFO] finished tweaking crates.io crate slicestring 0.3.3 [INFO] tweaked toml for crates.io crate slicestring 0.3.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate slicestring 0.3.3 on toolchain caccb4d0368bd918ef6668af8e13834d07040417 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 31d4e6558c2b41835537f42509316cb5f2c3e0fe405f480a35365c5fd52cc13b [INFO] running `Command { std: "docker" "start" "-a" "31d4e6558c2b41835537f42509316cb5f2c3e0fe405f480a35365c5fd52cc13b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "31d4e6558c2b41835537f42509316cb5f2c3e0fe405f480a35365c5fd52cc13b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31d4e6558c2b41835537f42509316cb5f2c3e0fe405f480a35365c5fd52cc13b", kill_on_drop: false }` [INFO] [stdout] 31d4e6558c2b41835537f42509316cb5f2c3e0fe405f480a35365c5fd52cc13b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d4c140998580ba1d6a84ba7e1ca14901ae7b47cfd7262303ac1183a1129adca0 [INFO] running `Command { std: "docker" "start" "-a" "d4c140998580ba1d6a84ba7e1ca14901ae7b47cfd7262303ac1183a1129adca0", kill_on_drop: false }` [INFO] [stderr] Compiling slicestring v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:17 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s [INFO] running `Command { std: "docker" "inspect" "d4c140998580ba1d6a84ba7e1ca14901ae7b47cfd7262303ac1183a1129adca0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d4c140998580ba1d6a84ba7e1ca14901ae7b47cfd7262303ac1183a1129adca0", kill_on_drop: false }` [INFO] [stdout] d4c140998580ba1d6a84ba7e1ca14901ae7b47cfd7262303ac1183a1129adca0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 72b3d8006e45fd661121761a717a629d3c863b82a8f92129b83d7bbd8778dae2 [INFO] running `Command { std: "docker" "start" "-a" "72b3d8006e45fd661121761a717a629d3c863b82a8f92129b83d7bbd8778dae2", kill_on_drop: false }` [INFO] [stderr] Compiling slicestring v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:17 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/range.rs:12:17 [INFO] [stdout] | [INFO] [stdout] 12 | let mut y: usize = 0; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s [INFO] running `Command { std: "docker" "inspect" "72b3d8006e45fd661121761a717a629d3c863b82a8f92129b83d7bbd8778dae2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72b3d8006e45fd661121761a717a629d3c863b82a8f92129b83d7bbd8778dae2", kill_on_drop: false }` [INFO] [stdout] 72b3d8006e45fd661121761a717a629d3c863b82a8f92129b83d7bbd8778dae2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 1e52b7b2dcf2945c36246f2c37a0d7fe55beba752c1985c20ea65ab7e3320b55 [INFO] running `Command { std: "docker" "start" "-a" "1e52b7b2dcf2945c36246f2c37a0d7fe55beba752c1985c20ea65ab7e3320b55", kill_on_drop: false }` [INFO] [stderr] warning: value assigned to `y` is never read [INFO] [stderr] --> src/range.rs:12:17 [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] 12 | let mut y: usize = 0; [INFO] [stdout] running 1 test [INFO] [stderr] | ^ [INFO] [stdout] test test ... ok [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] warning: `slicestring` (lib) generated 1 warning [INFO] [stderr] warning: `slicestring` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/slicestring-fe10f7c2a0438795) [INFO] [stderr] Doc-tests slicestring [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test src/lib.rs - (line 8) ... FAILED [INFO] [stdout] test src/lib.rs - str::slice (line 70) ... FAILED [INFO] [stdout] test src/lib.rs - String::slice (line 40) ... FAILED [INFO] [stdout] test src/lib.rs - (line 18) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 8) stdout ---- [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/lib.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 7 | let mut s = "hello world!"; [INFO] [stdout] | -------------- expected due to this value [INFO] [stdout] 8 | s = s.slice(..5); [INFO] [stdout] | ^^^^^^^^^^^^ expected `&str`, found `String` [INFO] [stdout] | [INFO] [stdout] help: consider borrowing here [INFO] [stdout] | [INFO] [stdout] 8 | s = &s.slice(..5); [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - str::slice (line 70) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:72:7 [INFO] [stdout] | [INFO] [stdout] 4 | s = s.slice(..5); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 4 - s = s.slice(..5); [INFO] [stdout] 4 + s = s.split_once(..5); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - String::slice (line 40) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:42:7 [INFO] [stdout] | [INFO] [stdout] 4 | s = s.slice(..5); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 4 - s = s.slice(..5); [INFO] [stdout] 4 + s = s.split_once(..5); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 18) stdout ---- [INFO] [stdout] error[E0599]: no method named `slice` found for struct `String` in the current scope [INFO] [stdout] --> src/lib.rs:20:7 [INFO] [stdout] | [INFO] [stdout] 4 | s = s.slice(5..); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `split_once` with a similar name [INFO] [stdout] | [INFO] [stdout] 4 - s = s.slice(5..); [INFO] [stdout] 4 + s = s.split_once(5..); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 18) [INFO] [stdout] src/lib.rs - (line 8) [INFO] [stdout] src/lib.rs - String::slice (line 40) [INFO] [stdout] src/lib.rs - str::slice (line 70) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s [INFO] [stdout] [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "1e52b7b2dcf2945c36246f2c37a0d7fe55beba752c1985c20ea65ab7e3320b55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e52b7b2dcf2945c36246f2c37a0d7fe55beba752c1985c20ea65ab7e3320b55", kill_on_drop: false }` [INFO] [stdout] 1e52b7b2dcf2945c36246f2c37a0d7fe55beba752c1985c20ea65ab7e3320b55