[INFO] fetching crate slicestring 0.3.2...
[INFO] testing slicestring-0.3.2 against 1.69.0 for beta-1.70-1
[INFO] extracting crate slicestring 0.3.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate slicestring 0.3.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slicestring 0.3.2
[INFO] finished tweaking crates.io crate slicestring 0.3.2
[INFO] tweaked toml for crates.io crate slicestring 0.3.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 443a3080029a57de3364aa37bd26ca58481b797c3f0d9462ae204f0d91268354
[INFO] running `Command { std: "docker" "start" "-a" "443a3080029a57de3364aa37bd26ca58481b797c3f0d9462ae204f0d91268354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "443a3080029a57de3364aa37bd26ca58481b797c3f0d9462ae204f0d91268354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "443a3080029a57de3364aa37bd26ca58481b797c3f0d9462ae204f0d91268354", kill_on_drop: false }`
[INFO] [stdout] 443a3080029a57de3364aa37bd26ca58481b797c3f0d9462ae204f0d91268354
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3fa169ea1dce9329869435ceba4dcb27e631564ea44043e7c70e1347b26dcc1
[INFO] running `Command { std: "docker" "start" "-a" "b3fa169ea1dce9329869435ceba4dcb27e631564ea44043e7c70e1347b26dcc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling slicestring v0.3.2 (/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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "b3fa169ea1dce9329869435ceba4dcb27e631564ea44043e7c70e1347b26dcc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3fa169ea1dce9329869435ceba4dcb27e631564ea44043e7c70e1347b26dcc1", kill_on_drop: false }`
[INFO] [stdout] b3fa169ea1dce9329869435ceba4dcb27e631564ea44043e7c70e1347b26dcc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37080fdd3681ce16412347b473a6751dadac22078cfddc8ae133b09f895679d5
[INFO] running `Command { std: "docker" "start" "-a" "37080fdd3681ce16412347b473a6751dadac22078cfddc8ae133b09f895679d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling slicestring v0.3.2 (/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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "37080fdd3681ce16412347b473a6751dadac22078cfddc8ae133b09f895679d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37080fdd3681ce16412347b473a6751dadac22078cfddc8ae133b09f895679d5", kill_on_drop: false }`
[INFO] [stdout] 37080fdd3681ce16412347b473a6751dadac22078cfddc8ae133b09f895679d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7a509a244b15568dfa675ee5ac1b65f6ccec6c0d62ca18b0f8204abf63f7f602
[INFO] running `Command { std: "docker" "start" "-a" "7a509a244b15568dfa675ee5ac1b65f6ccec6c0d62ca18b0f8204abf63f7f602", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> src/range.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut y: usize = 0;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] test test ... ok
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `slicestring` (lib) generated 1 warning
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: `slicestring` (lib test) generated 1 warning (1 duplicate)
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/slicestring-72d7ad79b685c900)
[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] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 8) stdout ----
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/lib.rs:12:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | let mut s = "hello world!";
[INFO] [stdout]   |             -------------- expected due to this value
[INFO] [stdout] 7 | s = s.slice(..5);
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     expected `&str`, found `String`
[INFO] [stdout]   |     help: consider borrowing here: `&s.slice(..5)`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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]   |       ^^^^^ help: there is a method with a similar name: `split_once`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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]   |       ^^^^^ help: there is a method with a similar name: `split_once`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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]   |       ^^^^^ help: there is a method with a similar name: `split_once`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 0.15s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a509a244b15568dfa675ee5ac1b65f6ccec6c0d62ca18b0f8204abf63f7f602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a509a244b15568dfa675ee5ac1b65f6ccec6c0d62ca18b0f8204abf63f7f602", kill_on_drop: false }`
[INFO] [stdout] 7a509a244b15568dfa675ee5ac1b65f6ccec6c0d62ca18b0f8204abf63f7f602
