[INFO] cloning repository https://github.com/integrational/rust-exercises [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/integrational/rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3735d41deaa0e5f5262c29955d4b09b4ffe02434 [INFO] testing integrational/rust-exercises against 1.59.0 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fintegrational%2Frust-exercises" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/integrational/rust-exercises on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/integrational/rust-exercises [INFO] finished tweaking git repo https://github.com/integrational/rust-exercises [INFO] tweaked toml for git repo https://github.com/integrational/rust-exercises written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/integrational/rust-exercises already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 5cbb2010b1bed0830f9c12d5569e03fa2904f8a53e329dd5b7488a6cad824791 [INFO] running `Command { std: "docker" "start" "-a" "5cbb2010b1bed0830f9c12d5569e03fa2904f8a53e329dd5b7488a6cad824791", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5cbb2010b1bed0830f9c12d5569e03fa2904f8a53e329dd5b7488a6cad824791", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5cbb2010b1bed0830f9c12d5569e03fa2904f8a53e329dd5b7488a6cad824791", kill_on_drop: false }` [INFO] [stdout] 5cbb2010b1bed0830f9c12d5569e03fa2904f8a53e329dd5b7488a6cad824791 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 644cb87a44579ec5119bfe573d92ce9ad00ba58a8af3ad5f64f9cd7354ede0a8 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "644cb87a44579ec5119bfe573d92ce9ad00ba58a8af3ad5f64f9cd7354ede0a8", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^-------^ [INFO] [stdout] | | | [INFO] [stdout] | | immutable borrow later used here [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `mean` [INFO] [stdout] --> src/int_stats.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | mean: f64, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `median` [INFO] [stdout] --> src/int_stats.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | median: f64, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `mode` [INFO] [stdout] --> src/int_stats.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | mode: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.25s [INFO] running `Command { std: "docker" "inspect" "644cb87a44579ec5119bfe573d92ce9ad00ba58a8af3ad5f64f9cd7354ede0a8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "644cb87a44579ec5119bfe573d92ce9ad00ba58a8af3ad5f64f9cd7354ede0a8", kill_on_drop: false }` [INFO] [stdout] 644cb87a44579ec5119bfe573d92ce9ad00ba58a8af3ad5f64f9cd7354ede0a8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a65b371e3afb2b3a0eee56d22ad88159405750063353092b3322f94a47598bf8 [INFO] running `Command { std: "docker" "start" "-a" "a65b371e3afb2b3a0eee56d22ad88159405750063353092b3322f94a47598bf8", kill_on_drop: false }` [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^-------^ [INFO] [stdout] | | | [INFO] [stdout] | | immutable borrow later used here [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling exercises v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `mean` [INFO] [stdout] --> src/int_stats.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | mean: f64, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `median` [INFO] [stdout] --> src/int_stats.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | median: f64, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `mode` [INFO] [stdout] --> src/int_stats.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | mode: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/pig_latin.rs:39:17 [INFO] [stdout] | [INFO] [stdout] 31 | match (&self.state, is_word_char(c)) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 39 | self.push_word_suffix(*firstc); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^-------^ [INFO] [stdout] | | | [INFO] [stdout] | | immutable borrow later used here [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `mean` [INFO] [stdout] --> src/int_stats.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | mean: f64, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `median` [INFO] [stdout] --> src/int_stats.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | median: f64, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `mode` [INFO] [stdout] --> src/int_stats.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | mode: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.65s [INFO] running `Command { std: "docker" "inspect" "a65b371e3afb2b3a0eee56d22ad88159405750063353092b3322f94a47598bf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a65b371e3afb2b3a0eee56d22ad88159405750063353092b3322f94a47598bf8", kill_on_drop: false }` [INFO] [stdout] a65b371e3afb2b3a0eee56d22ad88159405750063353092b3322f94a47598bf8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f0f2cf5ef05e7bf545a89bf477a1cb7264f41fffa0c48f4b795309d6fcfb37da [INFO] running `Command { std: "docker" "start" "-a" "f0f2cf5ef05e7bf545a89bf477a1cb7264f41fffa0c48f4b795309d6fcfb37da", kill_on_drop: false }` [INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/pig_latin.rs:39:17 [INFO] [stderr] | [INFO] [stderr] 31 | match (&self.state, is_word_char(c)) { [INFO] [stderr] | ----------- immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 39 | self.push_word_suffix(*firstc); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^-------^ [INFO] [stderr] | | | [INFO] [stderr] | | immutable borrow later used here [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: field is never read: `mean` [INFO] [stderr] --> src/int_stats.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | mean: f64, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `median` [INFO] [stderr] --> src/int_stats.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | median: f64, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `mode` [INFO] [stderr] --> src/int_stats.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | mode: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `exercises` (lib) generated 4 warnings [INFO] [stderr] warning: `exercises` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/exercises-c61ae062f8ff69e9) [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/int_stats-56cbcc541c367a3f) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/pig_latin-73aa16aab2b1febd) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests exercises [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f0f2cf5ef05e7bf545a89bf477a1cb7264f41fffa0c48f4b795309d6fcfb37da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0f2cf5ef05e7bf545a89bf477a1cb7264f41fffa0c48f4b795309d6fcfb37da", kill_on_drop: false }` [INFO] [stdout] f0f2cf5ef05e7bf545a89bf477a1cb7264f41fffa0c48f4b795309d6fcfb37da