[INFO] cloning repository https://github.com/Fredilein/grit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Fredilein/grit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredilein%2Fgrit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredilein%2Fgrit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2a3e0d222989801223085a355d89eb2b6b515e3
[INFO] building Fredilein/grit against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredilein%2Fgrit" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Fredilein/grit on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Fredilein/grit
[INFO] finished tweaking git repo https://github.com/Fredilein/grit
[INFO] tweaked toml for git repo https://github.com/Fredilein/grit written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Fredilein/grit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[INFO] [stderr]   Downloaded redox_syscall v0.1.53
[INFO] [stderr]   Downloaded cc v1.0.35
[INFO] [stderr]   Downloaded flate2 v1.0.7
[INFO] [stderr]   Downloaded libc v0.2.51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd98426e529d20d00e38f06877277ec418a6f1f965bb62e12b4adb271386f8dd
[INFO] running `Command { std: "docker" "start" "-a" "fd98426e529d20d00e38f06877277ec418a6f1f965bb62e12b4adb271386f8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd98426e529d20d00e38f06877277ec418a6f1f965bb62e12b4adb271386f8dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd98426e529d20d00e38f06877277ec418a6f1f965bb62e12b4adb271386f8dd", kill_on_drop: false }`
[INFO] [stdout] fd98426e529d20d00e38f06877277ec418a6f1f965bb62e12b4adb271386f8dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8263ead1b0800ea4f5864c9fd1eef12d29fff38848aba55b78299525fb927baf
[INFO] running `Command { std: "docker" "start" "-a" "8263ead1b0800ea4f5864c9fd1eef12d29fff38848aba55b78299525fb927baf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling flate2 v1.0.7
[INFO] [stderr]    Compiling grit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ini::Ini`
[INFO] [stdout]  --> src/repo.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ini::Ini;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `type_end` is assigned to, but never used
[INFO] [stdout]   --> src/object.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut type_end = 0;                       // tut: x
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_type_end` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size_end` is never read
[INFO] [stdout]   --> src/object.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut size_end = 0;                       // tut: y
[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: value assigned to `size` is never read
[INFO] [stdout]   --> src/object.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut size = 0;
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `type_end` is never read
[INFO] [stdout]   --> src/object.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             type_end = i;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]   --> src/object.rs:75:28
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actually_write`
[INFO] [stdout]   --> src/object.rs:75:39
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actually_write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repo`
[INFO] [stdout]   --> src/object.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_find<'a>(repo: &GitRepository, name: &'a str) -> &'a str {
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_repo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/repo.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn repo_create(repo :&GitRepository, path: &String) {
[INFO] [stdout]    |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `serialize` and `deserialize` are never used
[INFO] [stdout]   --> src/object.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Object {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] 12 |     fn serialize(&self) -> &String;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 13 |     fn deserialize(&mut self, data: String);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `object_write` is never used
[INFO] [stdout]   --> src/object.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `object_find` is never used
[INFO] [stdout]   --> src/object.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_find<'a>(repo: &GitRepository, name: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `worktree` is never read
[INFO] [stdout]   --> src/repo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct GitRepository {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 12 |     pub worktree: PathBuf,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GitRepository` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "8263ead1b0800ea4f5864c9fd1eef12d29fff38848aba55b78299525fb927baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8263ead1b0800ea4f5864c9fd1eef12d29fff38848aba55b78299525fb927baf", kill_on_drop: false }`
[INFO] [stdout] 8263ead1b0800ea4f5864c9fd1eef12d29fff38848aba55b78299525fb927baf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 264a5f161bd99a4a24c21138582d1eb99d43f07b52b112e9f3bb3d56d1d2ea71
[INFO] running `Command { std: "docker" "start" "-a" "264a5f161bd99a4a24c21138582d1eb99d43f07b52b112e9f3bb3d56d1d2ea71", kill_on_drop: false }`
[INFO] [stderr]    Compiling grit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ini::Ini`
[INFO] [stdout]  --> src/repo.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ini::Ini;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `type_end` is assigned to, but never used
[INFO] [stdout]   --> src/object.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut type_end = 0;                       // tut: x
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_type_end` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size_end` is never read
[INFO] [stdout]   --> src/object.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut size_end = 0;                       // tut: y
[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: value assigned to `size` is never read
[INFO] [stdout]   --> src/object.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut size = 0;
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `type_end` is never read
[INFO] [stdout]   --> src/object.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             type_end = i;
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]   --> src/object.rs:75:28
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actually_write`
[INFO] [stdout]   --> src/object.rs:75:39
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actually_write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repo`
[INFO] [stdout]   --> src/object.rs:79:20
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_find<'a>(repo: &GitRepository, name: &'a str) -> &'a str {
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_repo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/repo.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn repo_create(repo :&GitRepository, path: &String) {
[INFO] [stdout]    |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `serialize` and `deserialize` are never used
[INFO] [stdout]   --> src/object.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Object {
[INFO] [stdout]    |           ------ methods in this trait
[INFO] [stdout] 12 |     fn serialize(&self) -> &String;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 13 |     fn deserialize(&mut self, data: String);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `object_write` is never used
[INFO] [stdout]   --> src/object.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn object_write<T: Object>(object: T, actually_write: bool){
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `object_find` is never used
[INFO] [stdout]   --> src/object.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn object_find<'a>(repo: &GitRepository, name: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `worktree` is never read
[INFO] [stdout]   --> src/repo.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct GitRepository {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 12 |     pub worktree: PathBuf,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GitRepository` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "264a5f161bd99a4a24c21138582d1eb99d43f07b52b112e9f3bb3d56d1d2ea71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "264a5f161bd99a4a24c21138582d1eb99d43f07b52b112e9f3bb3d56d1d2ea71", kill_on_drop: false }`
[INFO] [stdout] 264a5f161bd99a4a24c21138582d1eb99d43f07b52b112e9f3bb3d56d1d2ea71