[INFO] cloning repository https://github.com/alexcrichton/stamp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexcrichton/stamp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fstamp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fstamp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b972a7b617e6f267be68f3fe04385175b92e4c7
[INFO] testing alexcrichton/stamp-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fstamp-rs" "/workspace/builds/worker-76/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-76/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexcrichton/stamp-rs on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexcrichton/stamp-rs
[INFO] finished tweaking git repo https://github.com/alexcrichton/stamp-rs
[INFO] tweaked toml for git repo https://github.com/alexcrichton/stamp-rs written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] crate git repo https://github.com/alexcrichton/stamp-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caa47f2336baf8de0fc81a75465c8eb60160d9a8078abad4c038da1731fd727e
[INFO] running `Command { std: "docker" "start" "-a" "caa47f2336baf8de0fc81a75465c8eb60160d9a8078abad4c038da1731fd727e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caa47f2336baf8de0fc81a75465c8eb60160d9a8078abad4c038da1731fd727e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa47f2336baf8de0fc81a75465c8eb60160d9a8078abad4c038da1731fd727e", kill_on_drop: false }`
[INFO] [stdout] caa47f2336baf8de0fc81a75465c8eb60160d9a8078abad4c038da1731fd727e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fa6638041a25c4b578df2abce30db91bf2e92ce7000e90220ef9651ffc4bdf5
[INFO] running `Command { std: "docker" "start" "-a" "6fa6638041a25c4b578df2abce30db91bf2e92ce7000e90220ef9651ffc4bdf5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling stamp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout] 40 + fn copy(start: Instant, input: &mut dyn Read, output: &mut Write) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:56
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout]    |                                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout] 40 + fn copy(start: Instant, input: &mut Read, output: &mut dyn Write) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |            input: &mut Read,
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -            input: &mut Read,
[INFO] [stdout] 53 +            input: &mut dyn Read,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |            output: &mut Write) -> io::Result<()> {
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 -            output: &mut Write) -> io::Result<()> {
[INFO] [stdout] 54 +            output: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.14s
[INFO] running `Command { std: "docker" "inspect" "6fa6638041a25c4b578df2abce30db91bf2e92ce7000e90220ef9651ffc4bdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fa6638041a25c4b578df2abce30db91bf2e92ce7000e90220ef9651ffc4bdf5", kill_on_drop: false }`
[INFO] [stdout] 6fa6638041a25c4b578df2abce30db91bf2e92ce7000e90220ef9651ffc4bdf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68c31c92dfb2ec346d71a714836a0363c6a586f91234f80ce6f2aa5d0ff1d304
[INFO] running `Command { std: "docker" "start" "-a" "68c31c92dfb2ec346d71a714836a0363c6a586f91234f80ce6f2aa5d0ff1d304", kill_on_drop: false }`
[INFO] [stderr]    Compiling stamp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:37
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout]    |                                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout] 40 + fn copy(start: Instant, input: &mut dyn Read, output: &mut Write) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:56
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout]    |                                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stdout] 40 + fn copy(start: Instant, input: &mut Read, output: &mut dyn Write) {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |            input: &mut Read,
[INFO] [stdout]    |                        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -            input: &mut Read,
[INFO] [stdout] 53 +            input: &mut dyn Read,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |            output: &mut Write) -> io::Result<()> {
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 -            output: &mut Write) -> io::Result<()> {
[INFO] [stdout] 54 +            output: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "68c31c92dfb2ec346d71a714836a0363c6a586f91234f80ce6f2aa5d0ff1d304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c31c92dfb2ec346d71a714836a0363c6a586f91234f80ce6f2aa5d0ff1d304", kill_on_drop: false }`
[INFO] [stdout] 68c31c92dfb2ec346d71a714836a0363c6a586f91234f80ce6f2aa5d0ff1d304
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4e37aa57bc81f060924698c39bc97bc1d292e7d6911231159d6f7b5ba9c285dc
[INFO] running `Command { std: "docker" "start" "-a" "4e37aa57bc81f060924698c39bc97bc1d292e7d6911231159d6f7b5ba9c285dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:37
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stderr] 40 + fn copy(start: Instant, input: &mut dyn Read, output: &mut Write) {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:40:56
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stderr]    |                                                        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 40 - fn copy(start: Instant, input: &mut Read, output: &mut Write) {
[INFO] [stderr] 40 + fn copy(start: Instant, input: &mut Read, output: &mut dyn Write) {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:53:24
[INFO] [stderr]    |
[INFO] [stderr] 53 |            input: &mut Read,
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 53 -            input: &mut Read,
[INFO] [stderr] 53 +            input: &mut dyn Read,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:54:25
[INFO] [stderr]    |
[INFO] [stderr] 54 |            output: &mut Write) -> io::Result<()> {
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 54 -            output: &mut Write) -> io::Result<()> {
[INFO] [stderr] 54 +            output: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `stamp` (bin "stamp" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stamp-0aeec857af4985aa)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4e37aa57bc81f060924698c39bc97bc1d292e7d6911231159d6f7b5ba9c285dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e37aa57bc81f060924698c39bc97bc1d292e7d6911231159d6f7b5ba9c285dc", kill_on_drop: false }`
[INFO] [stdout] 4e37aa57bc81f060924698c39bc97bc1d292e7d6911231159d6f7b5ba9c285dc