[INFO] cloning repository https://github.com/AgustinCB/ruthless
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AgustinCB/ruthless" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f76e528d0d38ccde026431ba842caec45d8b187
[INFO] checking AgustinCB/ruthless against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AgustinCB/ruthless on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] finished tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] tweaked toml for git repo https://github.com/AgustinCB/ruthless written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AgustinCB/ruthless 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "e1c61c6aebf2b8477b3695fa3a38bee3967cfd89e75935e69be884a250e11c7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1c61c6aebf2b8477b3695fa3a38bee3967cfd89e75935e69be884a250e11c7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1c61c6aebf2b8477b3695fa3a38bee3967cfd89e75935e69be884a250e11c7b", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "4fad45086001f570326a3742a677431d798e44220a47c7059dfa08b76bcba433", kill_on_drop: false }`
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[INFO] [stderr]    Compiling failure_derive v0.1.5
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[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
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[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
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[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking filetime v0.2.4
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[INFO] [stderr]     Checking remove_dir_all v0.5.1
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[INFO] [stderr]     Checking tar v0.4.22
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking failure v0.1.5
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[INFO] [stderr]     Checking ruthless v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Subvol(PathBuf, BtrfsUuid, u64),
[INFO] [stdout]    |     ------ ^^^^^^^  ^^^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Subvol((), (), ()),
[INFO] [stdout]    |            ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, `3`, and `4` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Snapshot(PathBuf, BtrfsUuid, u64, BtrfsUuid, u64),
[INFO] [stdout]    |     -------- ^^^^^^^  ^^^^^^^^^  ^^^  ^^^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Snapshot((), (), (), (), ()),
[INFO] [stdout]    |              ~~  ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Subvol(PathBuf, BtrfsUuid, u64),
[INFO] [stdout]    |     ------ ^^^^^^^  ^^^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Subvol((), (), ()),
[INFO] [stdout]    |            ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Write(PathBuf, u64, Vec<u8>),
[INFO] [stdout]    |     -----          ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Write(PathBuf, (), Vec<u8>),
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, `2`, `3`, and `4` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Snapshot(PathBuf, BtrfsUuid, u64, BtrfsUuid, u64),
[INFO] [stdout]    |     -------- ^^^^^^^  ^^^^^^^^^  ^^^  ^^^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Snapshot((), (), (), (), ()),
[INFO] [stdout]    |              ~~  ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Write(PathBuf, u64, Vec<u8>),
[INFO] [stdout]    |     -----          ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Write(PathBuf, (), Vec<u8>),
[INFO] [stdout]    |                    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/btrfs_send.rs:29:11
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Clone(PathBuf, u64, u64, BtrfsUuid, u64, PathBuf, u64),
[INFO] [stdout]    |     ----- ^^^^^^^  ^^^  ^^^  ^^^^^^^^^  ^^^  ^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Clone((), (), (), (), (), (), ()),
[INFO] [stdout]    |           ~~  ~~  ~~  ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `3` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:33:41
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Utimes(PathBuf, Timespec, Timespec, Timespec),
[INFO] [stdout]    |     ------ field in this variant        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Utimes(PathBuf, Timespec, Timespec, ()),
[INFO] [stdout]    |                                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |     UpdateExtent(PathBuf, u64, u64),
[INFO] [stdout]    |     ------------ ^^^^^^^  ^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 35 |     UpdateExtent((), (), ()),
[INFO] [stdout]    |                  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `secs` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(crate) struct Timespec {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] 40 |     secs: u64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Timespec` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/btrfs_send.rs:29:11
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Clone(PathBuf, u64, u64, BtrfsUuid, u64, PathBuf, u64),
[INFO] [stdout]    |     ----- ^^^^^^^  ^^^  ^^^  ^^^^^^^^^  ^^^  ^^^^^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Clone((), (), (), (), (), (), ()),
[INFO] [stdout]    |           ~~  ~~  ~~  ~~  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |     Transid(u64),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 52 |     Transid(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:62:11
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Otime(Timespec),
[INFO] [stdout]    |     ----- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Otime(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |     CloneUuid(BtrfsUuid),
[INFO] [stdout]    |     --------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 |     CloneUuid(()),
[INFO] [stdout]    |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTRFS_IOC_INO_LOOKUP_USER` is never used
[INFO] [stdout]   --> src/images.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(crate) const BTRFS_IOC_INO_LOOKUP_USER: u64 = 62;
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `3` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:33:41
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Utimes(PathBuf, Timespec, Timespec, Timespec),
[INFO] [stdout]    |     ------ field in this variant        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Utimes(PathBuf, Timespec, Timespec, ()),
[INFO] [stdout]    |                                         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/btrfs_send.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |     UpdateExtent(PathBuf, u64, u64),
[INFO] [stdout]    |     ------------ ^^^^^^^  ^^^  ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 35 |     UpdateExtent((), (), ()),
[INFO] [stdout]    |                  ~~  ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `secs` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(crate) struct Timespec {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] 40 |     secs: u64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Timespec` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |     Transid(u64),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 52 |     Transid(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:62:11
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Otime(Timespec),
[INFO] [stdout]    |     ----- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Otime(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/btrfs_send.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 |     CloneUuid(BtrfsUuid),
[INFO] [stdout]    |     --------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 |     CloneUuid(()),
[INFO] [stdout]    |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BTRFS_IOC_INO_LOOKUP_USER` is never used
[INFO] [stdout]   --> src/images.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub(crate) const BTRFS_IOC_INO_LOOKUP_USER: u64 = 62;
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.38s
[INFO] running `Command { std: "docker" "inspect" "4fad45086001f570326a3742a677431d798e44220a47c7059dfa08b76bcba433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fad45086001f570326a3742a677431d798e44220a47c7059dfa08b76bcba433", kill_on_drop: false }`
[INFO] [stdout] 4fad45086001f570326a3742a677431d798e44220a47c7059dfa08b76bcba433
