[INFO] cloning repository https://github.com/hoyeungw/veho
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hoyeungw/veho" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoyeungw%2Fveho", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoyeungw%2Fveho'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e31c1923bcfb1b9f836efd5cc985297b50598247
[INFO] checking hoyeungw/veho against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoyeungw%2Fveho" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hoyeungw/veho on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hoyeungw/veho
[INFO] finished tweaking git repo https://github.com/hoyeungw/veho
[INFO] tweaked toml for git repo https://github.com/hoyeungw/veho written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/hoyeungw/veho already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] e88bab30ce40aa248fd024eb05e4a32d9c0597f9eb5370eb812ec7dbe661f5aa
[INFO] running `Command { std: "docker" "start" "-a" "e88bab30ce40aa248fd024eb05e4a32d9c0597f9eb5370eb812ec7dbe661f5aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e88bab30ce40aa248fd024eb05e4a32d9c0597f9eb5370eb812ec7dbe661f5aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e88bab30ce40aa248fd024eb05e4a32d9c0597f9eb5370eb812ec7dbe661f5aa", kill_on_drop: false }`
[INFO] [stdout] e88bab30ce40aa248fd024eb05e4a32d9c0597f9eb5370eb812ec7dbe661f5aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72910f7f12b95e5b13b49d99294eaac477b57ade0d0e3adeb8ebfe6ea8f1bf8e
[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" "72910f7f12b95e5b13b49d99294eaac477b57ade0d0e3adeb8ebfe6ea8f1bf8e", kill_on_drop: false }`
[INFO] [stderr]     Checking veho v0.0.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/vector/mappers.rs:17:40
[INFO] [stdout]    |
[INFO] [stdout] 17 |     { for x in &mut self.into_iter() { &f(&mut *x); } }
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/vector/mappers.rs:32:57
[INFO] [stdout]    |
[INFO] [stdout] 32 |     { for (i, x) in &mut self.into_iter().enumerate() { &f(i, &mut *x); } }
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/matrix/mutaters.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 &f(&mut *x);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/matrix/mutaters.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 &f(i, j, &mut *x);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> tests/alpha/columns_test/mapper_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/vector/mappers.rs:17:40
[INFO] [stdout]    |
[INFO] [stdout] 17 |     { for x in &mut self.into_iter() { &f(&mut *x); } }
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/vector/mappers.rs:32:57
[INFO] [stdout]    |
[INFO] [stdout] 32 |     { for (i, x) in &mut self.into_iter().enumerate() { &f(i, &mut *x); } }
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/vector/mappers.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |             &mut text.push_str(&x.to_string());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/matrix/mappers.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |             &mut text.push_str(&format!("#{:0>6X}", x));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/matrix/mutaters.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |                 &f(&mut *x);
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/matrix/mutaters.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 &f(i, j, &mut *x);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/alpha/mut_test/simplest_iter_mut_test_worked.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         &f(&mut *x);
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/alpha/mut_test/matrix_iter_mut_test_not_worked.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         &f(&mut *x);
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "72910f7f12b95e5b13b49d99294eaac477b57ade0d0e3adeb8ebfe6ea8f1bf8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72910f7f12b95e5b13b49d99294eaac477b57ade0d0e3adeb8ebfe6ea8f1bf8e", kill_on_drop: false }`
[INFO] [stdout] 72910f7f12b95e5b13b49d99294eaac477b57ade0d0e3adeb8ebfe6ea8f1bf8e