[INFO] fetching crate rivia 0.2.10...
[INFO] building rivia-0.2.10 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate rivia 0.2.10 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate rivia 0.2.10
[INFO] finished tweaking crates.io crate rivia 0.2.10
[INFO] tweaked toml for crates.io crate rivia 0.2.10 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rivia 0.2.10 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rivia 0.2.10 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 725afa081804fcc7f3d210bee1bf2d108e3f489b3a4b89704b8033d570e994e0
[INFO] running `Command { std: "docker" "start" "-a" "725afa081804fcc7f3d210bee1bf2d108e3f489b3a4b89704b8033d570e994e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "725afa081804fcc7f3d210bee1bf2d108e3f489b3a4b89704b8033d570e994e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725afa081804fcc7f3d210bee1bf2d108e3f489b3a4b89704b8033d570e994e0", kill_on_drop: false }`
[INFO] [stdout] 725afa081804fcc7f3d210bee1bf2d108e3f489b3a4b89704b8033d570e994e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7978f5d1d7a721033b0401a9e8059397b8f3146b5cdf4c227d86dbe7d077393
[INFO] running `Command { std: "docker" "start" "-a" "d7978f5d1d7a721033b0401a9e8059397b8f3146b5cdf4c227d86dbe7d077393", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling nix v0.23.2
[INFO] [stderr]    Compiling rivia v0.2.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:152:30
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:157:31
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                               ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.23s
[INFO] running `Command { std: "docker" "inspect" "d7978f5d1d7a721033b0401a9e8059397b8f3146b5cdf4c227d86dbe7d077393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7978f5d1d7a721033b0401a9e8059397b8f3146b5cdf4c227d86dbe7d077393", kill_on_drop: false }`
[INFO] [stdout] d7978f5d1d7a721033b0401a9e8059397b8f3146b5cdf4c227d86dbe7d077393
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20ea7b2fb2611a9b77097d89d5ee657231f121a179c3b603847924b9add34d2b
[INFO] running `Command { std: "docker" "start" "-a" "20ea7b2fb2611a9b77097d89d5ee657231f121a179c3b603847924b9add34d2b", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:152:30
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:157:31
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                               ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rivia v0.2.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/core/string.rs:202:26
[INFO] [stdout]     |
[INFO] [stdout] 202 |         assert_eq!("foo".trim_suffix("boo"), "foo"); // no change
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/core/string.rs:203:26
[INFO] [stdout]     |
[INFO] [stdout] 203 |         assert_eq!("foo".trim_suffix("oo"), "f");
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/core/string.rs:204:26
[INFO] [stdout]     |
[INFO] [stdout] 204 |         assert_eq!("ƒoo".trim_suffix("o"), "ƒo"); // fancy f!
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `core::string::StringExt::trim_suffix(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(trim_prefix_suffix)]` to the crate attributes to enable `core::str::<impl str>::trim_suffix`
[INFO] [stdout]    --> src/lib.rs:61:1
[INFO] [stdout]     |
[INFO] [stdout]  61 + #![feature(trim_prefix_suffix)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:152:30
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub(crate) fn read_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sys/fs/memfs/vfs.rs:157:31
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard {
[INFO] [stdout]     |                               ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub(crate) fn write_guard(&self) -> MemfsGuard<'_> {
[INFO] [stdout]     |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.37s
[INFO] running `Command { std: "docker" "inspect" "20ea7b2fb2611a9b77097d89d5ee657231f121a179c3b603847924b9add34d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ea7b2fb2611a9b77097d89d5ee657231f121a179c3b603847924b9add34d2b", kill_on_drop: false }`
[INFO] [stdout] 20ea7b2fb2611a9b77097d89d5ee657231f121a179c3b603847924b9add34d2b
