[INFO] cloning repository https://github.com/tony612/rust-by-example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tony612/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftony612%2Frust-by-example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftony612%2Frust-by-example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 12770c03945679fc114a5ef5accc51c6ecc0e8f9 [INFO] testing tony612/rust-by-example against 1.59.0 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftony612%2Frust-by-example" "/workspace/builds/worker-23/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tony612/rust-by-example 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/tony612/rust-by-example [INFO] finished tweaking git repo https://github.com/tony612/rust-by-example [INFO] tweaked toml for git repo https://github.com/tony612/rust-by-example written to /workspace/builds/worker-23/source/Cargo.toml [INFO] crate git repo https://github.com/tony612/rust-by-example 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] [stdout] c45ca824253b656b3f3a558d4de300ad62730db1af0772f0d3f1f21f0f0591e7 [INFO] running `Command { std: "docker" "start" "-a" "c45ca824253b656b3f3a558d4de300ad62730db1af0772f0d3f1f21f0f0591e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c45ca824253b656b3f3a558d4de300ad62730db1af0772f0d3f1f21f0f0591e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c45ca824253b656b3f3a558d4de300ad62730db1af0772f0d3f1f21f0f0591e7", kill_on_drop: false }` [INFO] [stdout] c45ca824253b656b3f3a558d4de300ad62730db1af0772f0d3f1f21f0f0591e7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 886345760f51b0c4c5e409c2cb7ca6a47c5bc55e84679a67b5473bb5b2c46c41 [INFO] running `Command { std: "docker" "start" "-a" "886345760f51b0c4c5e409c2cb7ca6a47c5bc55e84679a67b5473bb5b2c46c41", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling anyhow v1.0.40 [INFO] [stderr] Compiling pin-project-lite v0.2.6 [INFO] [stderr] Compiling once_cell v1.7.2 [INFO] [stderr] Compiling instant v0.1.9 [INFO] [stderr] Compiling tokio v1.6.1 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling mio v0.7.11 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.2.0 [INFO] [stderr] Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `longest` [INFO] [stdout] --> src/lifetime/function.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn longest<'a>(s1: &'a String, s2: &'a String) -> &'a String { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `pick_first` [INFO] [stdout] --> src/lifetime/function.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn pick_first<'a>(s1: &'a String, _s2: &String) -> &'a String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MyStruct` [INFO] [stdout] --> src/lifetime/method.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct MyStruct {} [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `empty` [INFO] [stdout] --> src/lifetime/method.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | fn empty(&self, _msg: &str) -> &str { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `msg` [INFO] [stdout] --> src/lifetime/method.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | fn msg<'a>(&self, msg: &'a str) -> &'a str { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MyStruct` [INFO] [stdout] --> src/lifetime/struct.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct MyStruct<'a> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `empty` [INFO] [stdout] --> src/lifetime/struct.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn empty(&self, _msg: &str) -> &str { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `msg` [INFO] [stdout] --> src/lifetime/struct.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn msg<'b>(&self, msg: &'b str) -> &'b str { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hygiene` [INFO] [stdout] --> src/macro/hygiene.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn hygiene() -> usize { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `across_scope` [INFO] [stdout] --> src/macro/hygiene.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn across_scope() -> usize { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `ref_mut` [INFO] [stdout] --> src/pattern_match/ref.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn ref_mut(mut s: Option<&str>) -> Option<&str> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `ref_mut2` [INFO] [stdout] --> src/pattern_match/ref.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn ref_mut2(mut s: Option<&str>) -> Option<&str> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `ref_mut3` [INFO] [stdout] --> src/pattern_match/ref.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn ref_mut3(s: Option<&str>) -> Option<&str> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `and_mut` [INFO] [stdout] --> src/pattern_match/ref.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn and_mut(input: Option<&mut Foo>) -> Option { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/pointer/cell.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn new(value: T) -> Cell { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/pointer/rc.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn new(value: T) -> Rc { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Shared` [INFO] [stdout] --> src/pointer/refcell.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Shared(usize), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Exclusive` [INFO] [stdout] --> src/pointer/refcell.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Exclusive, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/pointer/refcell.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 21 | fn new(value: T) -> RefCell { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `borrow` [INFO] [stdout] --> src/pointer/refcell.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | fn borrow(&self) -> Option> [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `borrow_mut` [INFO] [stdout] --> src/pointer/refcell.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn borrow_mut(&self) -> Option> [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `send` [INFO] [stdout] --> src/sync/mpsc.rs:30:8 [INFO] [stdout] | [INFO] [stdout] 30 | fn send(&self, v: T) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Receiver` [INFO] [stdout] --> src/sync/mpsc.rs:66:8 [INFO] [stdout] | [INFO] [stdout] 66 | struct Receiver { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `recv` [INFO] [stdout] --> src/sync/mpsc.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | fn recv(&mut self) -> Option { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `queue` [INFO] [stdout] --> src/sync/mpsc.rs:96:5 [INFO] [stdout] | [INFO] [stdout] 96 | queue: VecDeque, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `channel` [INFO] [stdout] --> src/sync/mpsc.rs:105:4 [INFO] [stdout] | [INFO] [stdout] 105 | fn channel() -> (Sender, Receiver) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/tokio/actor.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | data: Request, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sender` [INFO] [stdout] --> src/tokio/actor.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | sender: oneshot::Sender, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `spawn` [INFO] [stdout] --> src/tokio/actor.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn spawn(mut actor: A, mailbox: usize) -> Pid [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sender` [INFO] [stdout] --> src/tokio/actor.rs:37:5 [INFO] [stdout] | [INFO] [stdout] 37 | sender: mpsc::Sender>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `send` [INFO] [stdout] --> src/tokio/actor.rs:41:18 [INFO] [stdout] | [INFO] [stdout] 41 | pub async fn send(&self, data: Request) -> Result { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `watch` [INFO] [stdout] --> src/tokio/watch.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | async fn watch() -> Result<()> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 32 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 45s [INFO] running `Command { std: "docker" "inspect" "886345760f51b0c4c5e409c2cb7ca6a47c5bc55e84679a67b5473bb5b2c46c41", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "886345760f51b0c4c5e409c2cb7ca6a47c5bc55e84679a67b5473bb5b2c46c41", kill_on_drop: false }` [INFO] [stdout] 886345760f51b0c4c5e409c2cb7ca6a47c5bc55e84679a67b5473bb5b2c46c41 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] [stdout] 10db2ae7ffca74ba22dc170c02871997af2db9a434ff55770a2e4f0975ec1e2d [INFO] running `Command { std: "docker" "start" "-a" "10db2ae7ffca74ba22dc170c02871997af2db9a434ff55770a2e4f0975ec1e2d", kill_on_drop: false }` [INFO] [stderr] Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.72s [INFO] running `Command { std: "docker" "inspect" "10db2ae7ffca74ba22dc170c02871997af2db9a434ff55770a2e4f0975ec1e2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "10db2ae7ffca74ba22dc170c02871997af2db9a434ff55770a2e4f0975ec1e2d", kill_on_drop: false }` [INFO] [stdout] 10db2ae7ffca74ba22dc170c02871997af2db9a434ff55770a2e4f0975ec1e2d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] [stdout] 45352869d7b36bbb202872743d2c9e8d7e4dfb5d2580f3fa57f0bf7276b3f84f [INFO] running `Command { std: "docker" "start" "-a" "45352869d7b36bbb202872743d2c9e8d7e4dfb5d2580f3fa57f0bf7276b3f84f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.56s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_by_example-c35da2990d599218) [INFO] [stdout] [INFO] [stdout] running 31 tests [INFO] [stderr] error: test failed, to rerun pass '--bin rust-by-example' [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/deps/rust_by_example-c35da2990d599218` (signal: 11, SIGSEGV: invalid memory reference) [INFO] running `Command { std: "docker" "inspect" "45352869d7b36bbb202872743d2c9e8d7e4dfb5d2580f3fa57f0bf7276b3f84f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "45352869d7b36bbb202872743d2c9e8d7e4dfb5d2580f3fa57f0bf7276b3f84f", kill_on_drop: false }` [INFO] [stdout] 45352869d7b36bbb202872743d2c9e8d7e4dfb5d2580f3fa57f0bf7276b3f84f